Confused on a maths question;algebra?

Question

QUESTION;3/2a-5/4b+2/5c+2/3a-7/2b+7/2c+5...

ANSWER:23a/6-9b/4+53c/20

i dont get the fact that in the answer A and B and C are on the numerator when in the question it was neither in the the numerator or denominator.

if u dont get what im trying to say then i understand because it was quite hard for me to put my point across

Answer 1

sorry i'm confused!?!?

Answer 2

3/2a is the same as as 3/2 x a which is the same as

(3 x a)/2 or 3a/2

So the question become 3a/2-5b/4+2c/5+2a/3-7b/2+5

Get all the a's together the b's together and c's together

and add

Hope this helps!