I am confused - 48÷2(9+3) = 2 @ 288 ? (Apr/28/2011 )
adrian kohsf on Fri Apr 29 10:40:15 2011 said:
Ops, should be "Keyboard Warrior" rather than "keyboard hero", my bad...
I had actually thought, by replace the 2 with A:
48÷A(9+3) = 48÷(9A+3A)= 48÷(12A) =4/A, replace A with 2, got 2 as answer...
The problem is that you can NEVER do this.
"the rule" in math is that brackets come before all the rest.. no matter whats writting next, above or... it.
Always go for the brackets first, then you can not make any mistake.
And then you follow the other rules...
BTW: is it normal not to write the "multiplying operator" ? I have always been told to write the X or . so how come it not here?
Because writing nothing could mean anything => to me it just means that the one who wrote it missed an operator so it could be anything from ^, x, to ln ...
hobglobin on Fri Apr 29 10:27:58 2011 said:
google gives the right answer, just try out...
it sure does
-pito-
hobglobin on Fri Apr 29 10:27:58 2011 said:
google gives the right answer, just try out...
Hobglobin, Wonder what your kids are going to do in School
-gt_ameya-
I agree with the rule as Pito pointed, you cannot analyze that way. It should be
48÷A(9+3) = (48/A)(9+3)= 12*(48/A), replace A with 2, you will get 288.
-newborn-
gt_ameya on Mon May 2 05:17:03 2011 said:
hobglobin on Fri Apr 29 10:27:58 2011 said:
google gives the right answer, just try out...
Hobglobin, Wonder what your kids are going to do in School
luckily I have no kids...
but google shows the way to calculate it, this way: (48 ÷ 2) * (9 + 3) = 288
should be explanatory enough....
-hobglobin-