48÷2(9+3) = ???

mathm.jpg
 
The common sense in most people tell them to finish what they started. But apparently, once you get that 12, you need to look back at the equation and go from left to right.. Maybe it's laziness to just finish what you started and THEN jump to the left to finally do the division
 
The common sense in most people tell them to finish what they started. But apparently, once you get that 12, you need to look back at the equation and go from left to right.. Maybe it's laziness to just finish what you started and THEN jump to the left to finally do the division
 
Originally Posted by AusZero

Originally Posted by N1K3B4LLER

The point that people miss about PEMDAS is that it's really
P E M/D A/S

multiplication and division happen at the same time (from left to right) as do addition and subtraction.

this means M and D are interchangeable so having MD is the same as DM

In your example the first is correct not because division always come before multiplication but because the division in the problem is first.
QFT
288
 
Originally Posted by AusZero

Originally Posted by N1K3B4LLER

The point that people miss about PEMDAS is that it's really
P E M/D A/S

multiplication and division happen at the same time (from left to right) as do addition and subtraction.

this means M and D are interchangeable so having MD is the same as DM

In your example the first is correct not because division always come before multiplication but because the division in the problem is first.
QFT
288
 
You can't just separate the 2 from the parenthesis all willy-nilly.

Doing so would change the problem.

As it's written, the answer is 2. You can even use the distributive property and write it as such: 48 ÷ (18 + 6) = 48 ÷ 24 = 2
 
You can't just separate the 2 from the parenthesis all willy-nilly.

Doing so would change the problem.

As it's written, the answer is 2. You can even use the distributive property and write it as such: 48 ÷ (18 + 6) = 48 ÷ 24 = 2
 
48/2(9+3)
48/2(12)
Top to bottom LEFT TO RIGHT that's the way we read and write.
48/2(12)---> 24 (12)
=288

After you learned PEMDAS your teacher should have told you M and D are interchangeable as well as A and S.
 
48/2(9+3)
48/2(12)
Top to bottom LEFT TO RIGHT that's the way we read and write.
48/2(12)---> 24 (12)
=288

After you learned PEMDAS your teacher should have told you M and D are interchangeable as well as A and S.
 
Originally Posted by 703FlipFiend

Originally Posted by LBJ23navo

Its 2. If you put it in the calculator it should be like this

48/(2(9+3))
No, you're changing the whole problem. Stop.
No, that is the question. The extra brackets are implied, as the equation 2(9+3) cannot be broken up. It must be solved before moving on with the rest of the problem.
 
Some of you are treating the parenthetical as an actual multiplication symbol. It's not. It serves as a multiplier, but to the number it is attached to. The 2 is attached to the parenthetical, which means you must solve it as part of the first step in the order of operations. This isn't rocket science.
 
Some of you are treating the parenthetical as an actual multiplication symbol. It's not. It serves as a multiplier, but to the number it is attached to. The 2 is attached to the parenthetical, which means you must solve it as part of the first step in the order of operations. This isn't rocket science.
 
Originally Posted by 703FlipFiend

Originally Posted by LBJ23navo

Its 2. If you put it in the calculator it should be like this

48/(2(9+3))
No, you're changing the whole problem. Stop.
No, that is the question. The extra brackets are implied, as the equation 2(9+3) cannot be broken up. It must be solved before moving on with the rest of the problem.
 
Originally Posted by dmbrhs

Some of you are treating the parenthetical as an actual multiplication symbol. It's not. It serves as a multiplier, but to the number it is attached to. The 2 is attached to the parenthetical, which means you must solve it as part of the first step in the order of operations. This isn't rocket science.
Oh damn. This made some sense.
 
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