SOLUTION: I know this is a very simple type of equation, but I've forgotten which ones can cancel out and which have to stay. This is the problem: (6a)(-4b) _________ (-2ab)(-3b) It's

Algebra ->  Expressions-with-variables -> SOLUTION: I know this is a very simple type of equation, but I've forgotten which ones can cancel out and which have to stay. This is the problem: (6a)(-4b) _________ (-2ab)(-3b) It's      Log On


   

Question 169229: I know this is a very simple type of equation, but I've forgotten which ones can cancel out and which have to stay.
This is the problem:
(6a)(-4b)
_________
(-2ab)(-3b)
It's multiple choice, so the possible answers are:
A. 4b
B. 4/b
C. -4a
D. -4/a
E. -4/b
Please help!
Found 2 solutions by Mathtut, checkley77:
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
just seperate all the terms in there own parentheis and start cancelling
%28%286%29%28a%29%28-4%29%28b%29%29%2F%28-2%29%28a%29%28b%29%28-3%29%28b%29 a's canel 1 b cancels and you end with -4 constant in the numerator and a b in the denominator.
:
you end up with -4/b

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(6a)(-4b)
_________ multiply these terms.
(-2ab)(-3b)
-24ab/6ab^2 now divide -24 by 6=-4, cancel out the (a) terms one of the (b) terms.
-4/b ans. E)