48÷2(9+3) = ???

[acidicality]

Originally Posted by NLoc

Originally Posted by eddiehouse5

The answer is 2.

BB was going wild with this, Neogaf is also.

Also- http://answers.yahoo.com/question/index?qid=20110408055505AA0F9In

[h2]Best Answer - Chosen by Asker[/h2]
Distributive property of multiplication over addition. Early Algebra problem.

The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3).

So this can be rewritten as:
48 / (2*9 + 2*3)

Which leaves us with

48 / 24 = 2

Answer = 2.

Lastly for those using Google or any other online calculator. These do not understand many theorems or properties so you must explicitly explain what you mean. There is a difference between 48 / 2 * (9+3) and 48 / 2(9+3). The first notation reads 48 / 2 * 1(9+3) while the second reads 48 / (2*9+2*3). Be very careful with your signs.

• Edited 5 hours ago

http://www.neogaf.com/forum/showpost.php?p=26993361&postcount=1030

this right here sums up everything. I suggest those that keep saying 288 to read this.

As NT's resident engineer graduate, this is true. The answer is 2. If the answer is 288, it would be 48(9+3)/2.

 

[acidicality]

Originally Posted by NLoc

Originally Posted by eddiehouse5

The answer is 2.

BB was going wild with this, Neogaf is also.

Also- http://answers.yahoo.com/question/index?qid=20110408055505AA0F9In

[h2]Best Answer - Chosen by Asker[/h2]
Distributive property of multiplication over addition. Early Algebra problem.

The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3).

So this can be rewritten as:
48 / (2*9 + 2*3)

Which leaves us with

48 / 24 = 2

Answer = 2.

Lastly for those using Google or any other online calculator. These do not understand many theorems or properties so you must explicitly explain what you mean. There is a difference between 48 / 2 * (9+3) and 48 / 2(9+3). The first notation reads 48 / 2 * 1(9+3) while the second reads 48 / (2*9+2*3). Be very careful with your signs.

• Edited 5 hours ago

http://www.neogaf.com/forum/showpost.php?p=26993361&postcount=1030

this right here sums up everything. I suggest those that keep saying 288 to read this.

As NT's resident engineer graduate, this is true. The answer is 2. If the answer is 288, it would be 48(9+3)/2.

 

[Shanegerous]

NTers are fools man lol they wait till the right answer then all swoop in and try and take credit.

 

[a55a5in11]

its 288. for the answer to be 2 wouldnt it have to be written like this.
48/(2(9+3)

 

[itsaNYthing]

I say 288

 

[Shanegerous]

NTers are fools man lol they wait till the right answer then all swoop in and try and take credit.

 

[a55a5in11]

its 288. for the answer to be 2 wouldnt it have to be written like this.
48/(2(9+3)

 

[itsaNYthing]

I say 288

 

[DeadsetAce]

balloonoboy...thats just not how it works. what you do basically ignores the whole point of the parenthesis....

 

[DeadsetAce]

balloonoboy...thats just not how it works. what you do basically ignores the whole point of the parenthesis....

 

[usainboltisfast]

Originally Posted by acidicality

Originally Posted by NLoc

Originally Posted by eddiehouse5

The answer is 2.

BB was going wild with this, Neogaf is also.

Also- http://answers.yahoo.com/question/index?qid=20110408055505AA0F9In

http://www.neogaf.com/forum/showpost.php?p=26993361&postcount=1030

this right here sums up everything. I suggest those that keep saying 288 to read this.

As NT's resident engineer graduate, this is true. The answer is 2. If the answer is 288, it would be 48(9+3)/2.

RETURN YOUR DEGREE SIR

 

[usainboltisfast]

Originally Posted by acidicality

Originally Posted by NLoc

Originally Posted by eddiehouse5

The answer is 2.

BB was going wild with this, Neogaf is also.

Also- http://answers.yahoo.com/question/index?qid=20110408055505AA0F9In

http://www.neogaf.com/forum/showpost.php?p=26993361&postcount=1030

this right here sums up everything. I suggest those that keep saying 288 to read this.

As NT's resident engineer graduate, this is true. The answer is 2. If the answer is 288, it would be 48(9+3)/2.

RETURN YOUR DEGREE SIR

 

[thegoat121886]

engineering major here. I'm rolling with 2. i read all 14 pages too

 

[thegoat121886]

engineering major here. I'm rolling with 2. i read all 14 pages too

 

[usainboltisfast]

Originally Posted by thegoat121886

engineering major here. I'm rolling with 2. i read all 14 pages too

show me how you solved the problem step by step.

 

[usainboltisfast]

Originally Posted by thegoat121886

engineering major here. I'm rolling with 2. i read all 14 pages too

show me how you solved the problem step by step.

 

[chiqga]

PEMDAS ftw
2

 

[chiqga]

PEMDAS ftw
2

 

[do work son]

Originally Posted by usainboltisfast

Originally Posted by thegoat121886

engineering major here. I'm rolling with 2. i read all 14 pages too

show me how you solved the problem step by step.

48/ 2(9+3)
48/ 2(12)
48/24
2

 

[do work son]

Originally Posted by usainboltisfast

Originally Posted by thegoat121886

engineering major here. I'm rolling with 2. i read all 14 pages too

show me how you solved the problem step by step.

48/ 2(9+3)
48/ 2(12)
48/24
2

 

[greenranger]

"......That is, multiplication that is indicated by placement against parentheses (or brackets, etc) is "stronger" than "regular" multiplication. Typesetting the entire problem in a graphing calculator verifies this hierarchy"


From http://www.purplemath.com/modules/orderops2.htm


2 FTW

 

[usainboltisfast]

Display Teacher Resource 48 of the steps for the Order of Operations.
Emphasize that multiplication is not always solved before division. Just as
people read from left to right, multiplication and division are solved from
left to right. Model an example on the board with the following
expression: 18 ÷ 3 x 2. Repeat sample expressions for addition and
subtraction using the board to model.
http://www.nsa.gov/academ...erns/order_operation.pdf

 

[usainboltisfast]

Display Teacher Resource 48 of the steps for the Order of Operations.
Emphasize that multiplication is not always solved before division. Just as
people read from left to right, multiplication and division are solved from
left to right. Model an example on the board with the following
expression: 18 ÷ 3 x 2. Repeat sample expressions for addition and
subtraction using the board to model.
http://www.nsa.gov/academ...erns/order_operation.pdf

 

[greenranger]

"......That is, multiplication that is indicated by placement against parentheses (or brackets, etc) is "stronger" than "regular" multiplication. Typesetting the entire problem in a graphing calculator verifies this hierarchy"


From http://www.purplemath.com/modules/orderops2.htm


2 FTW

 

[balloonoboy]

Originally Posted by DeadsetAce

balloonoboy...thats just not how it works. what you do basically ignores the whole point of the parenthesis....

If I'm to go by this chart, after the parenthetical is distributed, it no longer is a parenthetical, but two separate monomials.

Show me where I ignored the point of the parenthesis.