Half of you will get this wrong: 48÷2(9+3) = 288 or 2?

[Built]

48÷2(9+3)

See, here's the problem. In order to evaluate the 2(9+3) first, you'd need to have brackets around that part, like this:

48÷[2(9+3)]

Were this the case, the problem would reduce to
48÷[2(12)]
=48÷[24]
=2

But you don't. Without the [brackets] around 2(9+3), order of operations requires 48 to be divided by two (into 24), and that this result is then multiplied by 12. Hence the 288.

 

[danzik17]

are you not to assume that 48÷2(9+3) equals (48÷2(9+3))

I'm going with 2

Would it help if it was written like 48 / 2 * (9 + 3)?

Division, multiplication, and modulus are weighted equally.

 

[Kirk B]

288 i promise

288 PEOPLE

 

[Diesel618]

it's the same thing as 48/(18+6)

 

[bulldogz]

fvck...it's from left to right...doin what is in parenthesis first...

 

[Diesel618]

parenthesis first means distribute the 2

 

[danzik17]

Look, if you don't believe it, copy the following into your address bar and hit enter:

javascript:alert(48/2*(9+3))

 

[danzik17]

parenthesis first means distribute the 2

No it doesn't - parenthesis simply affects the order of operations.

Tell me, what is this equal to:

1 * ((48 / 2) * (9 + 3))

 

[Diesel618]

this is an instance where typing it into your calculator will give you the wrong answer.

 

[Diesel618]

you have the 2 separated from the addition operation. 2(9+3) = (18+6)

 

[MyK]

LMFAO

288... bedmas much!?!?!!

 

[Triple Threat]

this is an instance where typing it into your calculator will give you the wrong answer.

Then either your calculator is busted or you don't know how to use it.

 

[bulldogz]

even if you distribute the 2, you will have 2(9+3) = 18 + 6 = 24

48 ÷ 24 = 2....left to right

10th graders and my high school teacher are laughing at us right now...

 

[Diesel618]

It's pemdas, but anyways....p stands for parethesis last time i checked. That means you work 2(9+3) first.

Now I'm startin to think I have the wrong approach. Damn. Fuck all of you.

 

[danzik17]

even if you distribute the 2, you will have 2(9+3) = 18 + 6 = 24

48 ÷ 24 = 2

10th graders and my high school teacher are laughing at us right now...

Uh dude this is like....5th grade math =P

 

[Diesel618]

even if you distribute the 2, you will have 2(9+3) = 18 + 6 = 24

48 ÷ 24 = 2

10th graders and my high school teacher are laughing at us right now...

that's what I was thinking. I worked it out two different ways and got 2 and convinced myself I wasright. Now I want to kill something. I hate getting shit wrong.

 

[BillHicksFan]

I don't practise Yanky math. Where I come from that equals 288.

 

[lnvanry]

2

I fail to see why this is so confusing...Its simple arithmetic

 

[danzik17]

It's pemdas, but anyways....p stands for parethesis last time i checked. That means you work 2(9+3) first.

Now I'm startin to think I have the wrong approach. Damn. Fuck all of you.

The 2 is not contained within the parenthesis, it is not a part of that operation.

 

[Diesel618]

I'm not stupid! I'm just a bad test taker. lol.

 

[bulldogz]

Uh dude this is like....5th grade math =P

lol....werd..!!

 

[MyK]

facepalm.jpg

bedmas... brackets.. division... multiplication.. add.. subtract!!!!

48 / 2(9+3) =
48 / 2(12) =
24(12) =
288

 

[bulldogz]

facepalm.jpg

bedmas... brackets.. division... multiplication.. add.. subtract!!!!

48 / 2(9+3) =
48 / 2(12) =
24(12) =
288

Your acronym is right, but there are no brackets in this equation...so the correct acronym is pemdas....just sayin

 

[MyK]

Your acronym is right, but there are no brackets in this equation...so the correct acronym is pemdas....just sayin

I learnt that shit is England as a small boy. our language, we own it, we use it how the fuck we want. when we are talkin American that you can chirp. just sayin

 

[danzik17]

How's about a more interesting, yet still easy one.

 

[MyK]

5

 

[bulldogz]

#1. 48 ÷ x(9 + 3) = 2
48 ÷ 9x + 3x = 2
48/12x = 2
4/x = 2
4 = 2x
4/2 = x

or

#2. 48 ÷ x(9 + 3) = 288
48 ÷ 9x + 3x = 288
48/12x = 288
4/x = 288
4 = 288x
4/288 = x
1/72 = x


I go with the number 1....

 

[maniclion]

I just used my calculator and this is what it gave me: 288 as I knew it would because you guys are confusing Multiply OR Divide Add OR Subtract with Multiply THEN Divide....OR is the proper rule and you work it Left to Right, also it's the stuff In parentheses not next to it also....


Google Calc rewrites it as thus:
(48 ÷ 2) * (9 + 3) = 288

 

[Glycomann]

I wish I had 2 more balls to laugh right off.

 

[MyK]

I wish I had 2 more balls to laugh right off.

you need 1 pair first their cheif