48÷2(9+3) = ???

[SumoNinja]

2(12) is also seen as 2x12... so 48/2(12) is also 48/2x12 which can also be seen as 48/12x2...

but 48/2x12 does not = 48/12x2

which is why left to right doesn't always work so if 48/2(12) or 48/12(2) is the equation then you have to get rid of the ( ) first

am i right?

 

[Bderick67]

yea i never argued this, what i'm saying is that it depends what the equation is asking

is it asking "what is 1/2 or 0.5 or "half" multiplied by (9+3)??

or is it asking "what is 1 divided by 2(9+3) or 2(12) or 24?"

Because of left to right progression in the equation 24 cannot be obtained. You must first divide the 1 by 2 then multiple by the (9+3) or 12. To get 24 a second bracket would need be added so 1/(2(9+3)) or 1/(2(12)) or 1/24

 

[Bderick67]

but 48/2x12 does not = 48/12x2

which is why left to right doesn't always work so if 48/2(12) or 48/12(2) is the equation then you have to get rid of the ( ) first

am i right?

Yes it does always work. A bracket with no equation in it only denotes multiplication. So in this example if the bracket was to do anything it would need be written 48/(2x12) or 48/(12x2) now those two are equal answer is 2.

 

[Bderick67]

Uhm, no. 2 is not in the bracket.
2(12) = 2x12.

48/2(12) ASSUMING is is 48 divided by 2 and then times 12, and not 48/(2(12)) (get it?).

the problem is, there can be two answers to 48/2(9+3) because there are two different ways of looking at it.

It can be looked at as 48 divided by 2 and then times 12, OR 48 divided by (2(12)).

Here's a pic.

See this is the problem, mis-interpretation no way that it should be interpreted as the top example in your pic. This is linear and has to go left to right to write out your top example you would need this 48/(2(9+3).

 

[SumoNinja]

Yes it does always work. A bracket with no equation in it only denotes multiplication. So in this example if the bracket was to do anything it would need be written 48/(2x12) or 48/(12x2) now those two are equal answer is 2.

yea because see, you "need" it to be written a certain way to prove what you think is correct

so you are saying that an equation like this is invalid?

48/2(12)

my brain hurts now

so 48/2x12 is not the same as 48/12x2 right? these are two different equations right?

 

[Bderick67]

yea because see, you "need" it to be written a certain way to prove what you think is correct

so you are saying that an equation like this is invalid?

48/2(12)

my brain hurts now

No it's valid, but the only thing the bracket denotes is multiplication. so first step is 48/2 so then 24(12)

so 48/2x12 is not the same as 48/12x2 right? these are two different equations right?

LOL stop editing correct those are not the same. To make them the same they would be written as 48/(12x2) and 48/(2x12)

 

[Bderick67]

I'm out, got to get up for work in 5.5 hours.

 

[SumoNinja]

See this is the problem, mis-interpretation no way that it should be interpreted as the top example in your pic. This is linear and has to go left to right to write out your top example you would need this 48/(2(9+3).

this is why i'm confused

so the equation in his top pic is invalid or can't exist the way it is written?

let's look at his top pic only, nothing else, how would you solve it? you would have to do the 2(12) first right?

 

[channarox]

I'm confused.... Mind****...

 

[fhawk362]

Stupid question, I figured it was 2 myself but the question is basically 48 halves (48/2) times (9+3), it doesnt look write typed out how it is though