SOLUTION: please help me to simplify : 3a/a-4 - 4/3(a-4) = (my incorrect answer was 9a-4/3a-12 simplified to 3a-.3 repeating)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: please help me to simplify : 3a/a-4 - 4/3(a-4) = (my incorrect answer was 9a-4/3a-12 simplified to 3a-.3 repeating)      Log On


   

Question 544579: please help me to simplify :
3a/a-4 - 4/3(a-4) =
(my incorrect answer was 9a-4/3a-12 simplified to 3a-.3 repeating)
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
%283a%2F%28a-4%29%29-%284%2F%283%28a-4%29%29%29
%283%2F3%29%283a%2F%28a-4%29%29-%284%2F%283%28a-4%29%29%29 multiplied by a 1/1, 3/3=1
%289a%2F%283%28a-4%29%29%29-%284%2F%283%28a-4%29%29%29both have common denoms so subtract numerators
%289a-4%29%2F%283%28a-4%29%29