Question

i know the answer is a/b,but i don't know how,so please explain me,with full explanation, i will mark him/her as brainleast.​

Answer 1

Answer:

2nd term (ab-b^2)/(ab-a^2)=b (a-b)/a (b-a)

=b (a-b)/(-a)(a-b)= -b/a

so

{(a^2-b^2)/ab}-(-b/a)}

={(a^2-b^2)/ab}+(b/a)}

={a^2-b^2+b^2}/ab=a^2/ab=a/b