Question

упростите:
(a/a-b - a/a+b)*a+b/2b

Answer 1

(a/a-b - a/a+b)*a+b/2b= a / a-b
1. a/a-b - a/a+b = a²+ab-a²+ab / (a+b)(a-b) = 2ab / (a+b)(a-b)
2/ 2ab / (a+b)(a-b) * a+b / 2b = a / a-b