(1/a+1) : (1-1/a) (2+ a+b/a-b) * (2- 3a/a+b) Упростить!!

Question

(1/a+1) : (1-1/a)
(2+ a+b/a-b) * (2- 3a/a+b)
Упростить!!

Answer 1

((1+a)/a) :((a-1))/a
((1+a)/a)*((a/(a-1))=(1+a)/(a-1)