I am done thats why I said "we have a winner" to The fault lies in the question itself. Just as I said in my first post.
48÷2(9+3)
- Thread starter Splash
- Start date
I am done thats why I said "we have a winner" to The fault lies in the question itself. Just as I said in my first post.
jolomatic
Well-known member
Why do so many people have a problem working from left to right?
The question is completely clear:
48÷2(9+3)
= 48 ÷ 2 * 12
= 24 * 12
= 288
If you INCORRECTLY work right to left instead you get:
48÷2(9+3)
= 48 ÷ 2 * 12
= 48 ÷ 24
= 2
EDIT: to get an answer of two, the expression should be "48÷(2(9+3))".
This works if you substitute x for any of the values, but if you work backwards, you'll still get the wrong answer.
And whoever said that "2(9+3)" makes the 2 a part of the 'brackets' operation, please go back to grade school.
That is an implied multiplication operation, and it gets resolved after any multiplaction or division to the left of it.
The question is completely clear:
48÷2(9+3)
= 48 ÷ 2 * 12
= 24 * 12
= 288
If you INCORRECTLY work right to left instead you get:
48÷2(9+3)
= 48 ÷ 2 * 12
= 48 ÷ 24
= 2
EDIT: to get an answer of two, the expression should be "48÷(2(9+3))".
This works if you substitute x for any of the values, but if you work backwards, you'll still get the wrong answer.
And whoever said that "2(9+3)" makes the 2 a part of the 'brackets' operation, please go back to grade school.
That is an implied multiplication operation, and it gets resolved after any multiplaction or division to the left of it.
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If I did math like this I would never have graduted period.
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Jonnie
Well-known member
Not sure if that's a jab at me. But let's be real, if this topic wasn't "complicated" there wouldn't be 4 pages of conversation. And substitution is hardly quantum physics; it's just a clean way to present the problem to others who feel there's only one definitive answer. It's high school math, chill out!
I'm not jabbing, speaking generally and not at anyone in particular. What I do know is, about 50% of the people in this thread are wrong.Not sure if that's a jab at me. But let's be real, if this topic wasn't "complicated" there wouldn't be 4 pages of conversation. And substitution is hardly quantum physics; it's just a clean way to present the problem to others who feel there's only one definitive answer. It's high school math, chill out!
Or are they............,..
Splash
Well-known member
so all the post in between don't exist?
BTW, there's no fault in the question itself. It's just that some people just can't read basic math.
This is a funny read. I can't tell if people are being serious or joking around.
48/2(9+3)=2 no matter how you slice it and dice it.
48 / 2(12)
48 / 24 = 2 ..........This is how it works using bedmas.
so for all of you who think its like these...you are wrong.
48/2(9+3)
48/2(12)
24(12)= 288
48/2 x (9+3)= 288
24 x 12 = 288...This is also wrong.
48/2(9+3)=2 no matter how you slice it and dice it.
48 / 2(12)
48 / 24 = 2 ..........This is how it works using bedmas.
so for all of you who think its like these...you are wrong.
48/2(9+3)
48/2(12)
24(12)= 288
48/2 x (9+3)= 288
24 x 12 = 288...This is also wrong.
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canadian_bacon
Active member
in addition to steveo:
48/2(9+3)=48/(18+6)
48/2(9+3)=48/(18+6)
Yup.
Yes, BEDMAS says Brackets first, but it means stuff *INSIDE* the brackets, not stuff touching the brackets. 2(12) is another way of saying 2 * 12.
In the equation, after you solve the brackets, what you have left is 48 / 2 * 12.
Why would you not do order of operations from left to right then (since the DM in BEDMAS are equal in importance)? Why would you try to solve right to left and multiply 2*12 first?
slogan
Well-known member
BUGAGA!:lmao:It's high school math, chill out!
I thought that was a thread for those bustards, who wanna kill a bit of time at work, but it looks like I was wrong about it:confused1:
:binky:
- "Simplify 16 ÷ 2[8 – 3(4 – 2)] + 1.
- 16 ÷ 2[8 – 3(4 – 2)] + 1
= 16 ÷ 2[8 – 3(2)] + 1
= 16 ÷ 2[8 – 6] + 1
= 16 ÷ 2[2] + 1 (**) - = 16 ÷ 4 + 1
= 4 + 1
= 5
- 16 ÷ 2[8 – 3(4 – 2)] + 1
calculation is how "16 divided
by 2[2] + 1" (in the line marked with the double-star) becomes "16 divided by 4 + 1",
instead of "8 times by
2 + 1". That's because, even though multiplication
and division are at the same level (so the left-to-right rule should apply),
parentheses outrank division, so the first 2 goes with
the [2], rather than with the "16 divided by". 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"
http://www.purplemath.com/modules/orderops2.htm
You could solve from the right or from the left, using bedmas or pedmas, math or pure math; the important thing here is that 2(9+3) is an expression that must be completed as one. You cannot detach the 2 from the (9+3) but must complete the entire expression 2(9+3) first.
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University of Waterloo doesn't say so: http://cemc2.math.uwaterloo.ca/wired_math/English/lessons/grade9/NSN_INTEG_Gr9.pdf
Once the inside of the brackets is solved, it is purely a multiplication function at that point.
As for purplemath.com, I'd trust the University of Waterloo Faculty of Mathematics instead.
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One thing I can agree with..................................................................................is to disagree. LOL
Im sorry. Maybe you didn't read the last two lines of my post. You are still wrong. Care to argue? Go punch it in on a scientific calculator. Maybe you can try and convince it that it's wrong.
