Solve 48

[sc302 Veteran]

the answer is 2 my noob friends :) 48/2(9+3) 9+3=12 its not done yet, 12 inside parenthesis is multiplying by 2. you have to keep simplyfing until its done. 12*2 =24 48/24 = 2. even with the distribution... 2*9 + 2*3 2 is part of it and must be dealt with first and simplified - 18 + 6 = 24. 48/24 = 2. You people getting 288 or whatever are wrong.

So do you trust a calculator more than a human?

How bout multiple calculators? in the second image I didn't add the * between the 48/2 and the (, it did that automagically. So every calculator is wrong in the world and a few people that really don't understand the order of operations is right?

[joint]

you have to get rid of the parenthesis... just saying 9+3=12 doesnt get rid of the parenthesis. continuing to simplify gets rid of the parenthesis. hence you have to multiply 12*2 You can't go left to right until its simplified and you get rid of the parenthesis

[Hardcore Til I Die]

The Distributive Property in ALgebra:

The Distributive Property is handy to help you get rid of parentheses.

a(b + c) = ab + ac

To multiply in algebra, you'll use the distributive law:

3x(x+4)

= 3x(x) + 3x(4)

=3x2+12x

i know the order, and so do you. You just arent finishing the operation. which is why u keep coming up with the wrong answer

you have to get rid of the parenthesis... just saying 9+3=12 doesnt get rid of the parenthesis. continuing to simplify gets rid of the parenthesis. hence you have to multiply 12*2

It seems to me like two laws are competing against each other, because according to the order of operations (9+3) should be solved first, NOT 2(9+3), yet according to the distributive property, 2(9+3) should be solved as one symbol, but this goes against the order of operations.

Clearly the distributive property needs to be incorporated into BODMAS/PEMDAS/whatever.

But as it stands.. I stick with 288!

[joint]

With order of operations multiplication and division are the same then you go from right to left. Thats how you get 288

48/2(12) goes to 24 x 12 = 288

Look up the order of operations OR type this into a calculator and you will get 288

LOL calculators don't really do algebra problems really well.... or all of you would have gotten an a in algebra ;) once you use the distributive property and simplify it.. then u can type it in the calculator for an answer of 2

[sc302 Veteran]

You can go left to right provided you understand what is happening.

left to right

48/2 = 24 (are you following me so far?)

stop we have parenthesis so we know from standard math procedure we must do that next

9+3 = 12 (are you still following me? we are still doing this left to right nothing really has changed)

so in reality, it is 24(12). What does this mean?

It means we take 24 and multiply it by 12 (not divide), which brings the answer to 288. All this by working left to right and understanding what the parenthesis are.

LOL calculators don't really do algebra problems really well.... or all of you would have gotten an a in algebra ;) once you use the distributive property and simplify it.. then u can type it in the calculator for an answer of 2

I did, got honers actually....scientific calculators do algebra quite well actually (but they don't tell you that in algebra) and at the time I took algebra the cheapest scientific calculator was over $100.

[Hardcore Til I Die]

You can go left to right provided you understand what is happening.

left to right

48/2 = 24 (are you following me so far?)

stop we have parenthesis so we know from standard math procedure we must do that next

9+3 = 12 (are you still following me? we are still doing this left to right nothing really has changed)

so in reality, it is 24(12). What does this mean?

It means we take 24 and multiply it by 12 (not divide), which brings the answer to 288. All this by working left to right and understanding what the parenthesis are.

I did, got honers actually....scientific calculators do algebra quite well actually (but they don't tell you that in algebra) and at the time I took algebra the cheapest scientific calculator was over $100.

48/2 is NOT solved before the brackets.

[sc302 Veteran]

the brackets do not disappear, it doesn't matter if you do the first portion first or second, the brackets do not disappear.

you do left to right unless otherwise instructed. the brackets do not go away.

This is how I read this, and most people in the world do (even the calculators disagree with you that are designed to specifically work with these types of problems).

48?2(9+3)=

48 ? 2 x (9 + 3)=

(48 ? 2) x (9 + 3)=

You solve left to right, with any math problem. the parenthesis do not go away with the 9+3 that is a whole answer. the 48/2 is a whole answer. once you solve the first part 48/2 you can continue on to mulitply it by the 9+3 answer.

[Hardcore Til I Die]

the brackets do not disappear, it doesn't matter when you do it.

In this case it doesn't matter but it might in other equations. Brackets are solved first.

[joint]

You can go left to right provided you understand what is happening.

left to right

48/2 = 24 (are you following me so far?)

stop we have parenthesis so we know from standard math procedure we must do that next

9+3 = 12 (are you still following me? we are still doing this left to right nothing really has changed)

so in reality, it is 24(12). What does this mean?

It means we take 24 and multiply it by 12 (not divide), which brings the answer to 288. All this by working left to right and understanding what the parenthesis are.

I did, got honers actually....scientific calculators do algebra quite well actually (but they don't tell you that in algebra) and at the time I took algebra the cheapest scientific calculator was over $100.

yes im following you. but you can do 48/anything until u get rid of the parethesis using the distributive property

It seems to me like two laws are competing against each other, because according to the order of operations (9+3) should be solved first, NOT 2(9+3), yet according to the distributive property, 2(9+3) should be solved as one symbol, but this goes against the order of operations.

Clearly the distributive property needs to be incorporated into BODMAS/PEMDAS/whatever.

But as it stands.. I stick with 288!

they are not competing with each other. if u solve 9+3 = 12. you still did not get rid of the parenthesis. you have (12) in order to get rid of the parenthesis you have to multiply that 12 by 2. hence the distribution property. 2(9+3) 2*9+2*3

[sc302 Veteran]

yes im following you. but you can do 48/anything until u get rid of the parethesis using the distributive property

You are missing the fact that the parenthesis do not disappear, it is the answer that is solved within the parenthesis that matter.

[2III7]

24 x 12 = 288

don't really get the point of this topic :D

solve -10?-[-(4?-2?)?]

[joint]

So do you trust a calculator more than a human?

How bout multiple calculators? in the second image I didn't add the * between the 48/2 and the (, it did that automagically. So every calculator is wrong in the world and a few people that really don't understand the order of operations is right?

I trust calculators. you are just doing it wrong. you have to get rid of the parenthesis first. type this into your calculator 2(9+3) get your answer. then do it from left to right

[sc302 Veteran]

2(9+3) isn't the whole question. You are doing it wrong if you think it is.

The question eventually becomes

24(12)

Type that into your calc. The 2 isn't in brackets encompassing the (9+3) so 2(9+3) is not correct.

It isn't 48/[2(9+3)] then your answer would be correct.

[Hardcore Til I Die]

I trust calculators. you are just doing it wrong. you have to get rid of the parenthesis first. type this into your calculator 2(9+3) get your answer. then do it from left to right

There's no argument that 2(9+3) on its' own = 24. The argument is whether the equation should be interpreted as 48/2*(9+3) or 48/(2(9+3))

[joint]

hehe, its all good. i know im right. their is no need to get personal or anything. i am using order of operations. parenthesis is the first thing u take care of, and they do dissapear. If you dont believe me... thats fine. Do the research.. take it to your math teacher - its all good. but the distributive property is how you multiply in algebra. the distributive property gets rid of the parenthesis, which is the first operation. otherwise, its all good. i enjoyed this topic ;) Have a good night my computer friends... and remember.. its almost time for ubuntu 11.04!!

[Hardcore Til I Die]

hehe, its all good. i know im right. their is no need to get personal or anything. i am using order of operations. parenthesis is the first thing u take care of, and they do dissapear. If you dont believe me... thats fine. Do the research.. take it to your math teacher - its all good. but the distributive property is how you multiply in algebra. the distributive property gets rid of the parenthesis, which is the first operation. otherwise, its all good. i enjoyed this topic ;) Have a good night my computer friends... and remember.. its almost time for ubuntu 11.04!!

The brackets do disappear and the equation is still simplified, but not in the order that you suggest.

(9+3) = (12)

48 / 2 = 24

24(12) = 24*12 = 288

[sc302 Veteran]

I think joint needs to see his math teacher.

[joint]

The brackets do disappear and the equation is still simplified, but not in the order that you suggest.

(9+3) = (12)

48 / 2 = 24

24(12) = 24*12 = 288

yea thats wrong. (9+3) = (12) the brackets are still there. they have to be gone before u continue. 12 inside the bracets means it is multiplying by something(keep simplyfing) . I know what you are saying, you are just wrong. you are just making up your own rules. I dont think you ever even took algebra before ;) the order i suggest is p first... you know, pemdas

yea thats wrong. (9+3) = (12) the brackets are still there. they have to be gone before u continue. 12 inside the bracets means it is multiplying by something(keep simplyfing) . I know what you are saying, you are just wrong. you are just making up your own rules. I dont think you ever even took algebra before ;) the order i suggest is p first... you know, pemdas

in your way... you never take care of the parentheses. you do it last? how is that right? what order of ops are you using? and yes u have to get rid of the parenthesis, thats what the whole distributive property is all about

[DPyro]

Why are there 24 pages for a simple math question? The answer is 288.

48?2(9+3) - brackets first

=48?2(12) - then left to right

=24(12)

=288

[joint]

ok you guys are right. the distributive property is wrong. when u finally take algebra for the first time... just type all the problems as u see them right into the calculator before putting the equation into correct form.... and watch yourself get an f

http://math.about.com/od/algebra/a/distributive.htm

[Hardcore Til I Die]

ok you guys are right. the distributive property is wrong. when u finally take algebra for the first time... just type all the problems as u see them right into the calculator before putting the equation into correct form.... and watch yourself get an f

http://math.about.com/od/algebra/a/distributive.htm

Okay you're right, the order of operations is wrong.. when you finally take basic maths for the first time.. watch yourself get an f.

You see? There are arguments for both sides. The more I think about it the more I think that it's an incorrectly written equation. The distributive property means you need to simplify 2(9+3), BUT, that goes against the order of operations because you are solving a multiplication on the right before you solve a division on the left.

I think it NEEDS to be written as either 48/(2(9+3)) OR 48/2*(9+3), both of which can be solved without ambiguity.

It seems like a contradictory equation.

Interpreting it as 48/2*(9+3) ignores the distributive property.

Interpreting it as 48/(2(9+3)) ignores the order of operations.

[cleverclogs]

BODMAS.

[joint]

Okay you're right, the order of operations is wrong.. when you finally take basic maths for the first time.. watch yourself get an f.

You see? There are arguments for both sides. The more I think about it the more I think that it's an incorrectly written equation. The distributive property means you need to simplify 2(9+3), BUT, that goes against the order of operations because you are solving a multiplication on the right before you solve a division on the left.

I think it NEEDS to be written as either 48/(2(9+3)) OR 48/2*(9+3), both of which can be solved without ambiguity.

It seems like a contradictory equation.

Interpreting it as 48/2*(9+3) ignores the distributive property.

Interpreting it as 48/(2(9+3)) ignores the order of operations.

their is no argument for the other side. the other side is wrong, and the eqation is fine. if the other side was right... the equation would look like this 48/2*12. but its not. its an algebra problem because of the parenthesis which means you use the distributive property. a(b+c) = a*b+a*c. You guys will understand this when you finally take algebra for the first time ;)

[Hardcore Til I Die]

their is no argument for the other side. the other side is wrong, and the eqation is fine. if the other side was right... the equation would look like this 48/2*12. but its not. its an algebra problem because of the parenthesis which means you use the distributive property. a(b+c) = a*b+a*c. You guys will understand this when you finally take algebra for the first time ;)

The order of ops exists in algebra too, you don't just forget about it.

[sc302 Veteran]

The majority of the people here are right and the calcs agree with them. Calcs are based on programming done by people much smarter than all of us. Either the mathematicians that were involved in programming every scientific calculator are wrong or the few that are saying 2 are wrong. My money is on the calcs and my teachings which agree with the calcs as well as the all knowing google.