Question

Помогите решить по действиям б и г

Answer 1

(a+b-2ab/(a+b):((a-b)/(a+b)+b/a)=
=(a(a+b)+b(a+b)-2ab)/(a+b)):(a(a-b)+b(a+b))/a(a+b)=
=((a²+ab+ab+b²-2ab)/(a+b)):((a²-ab+ab-b²)/a(a+b))=
=(a²+b²)/(a+b):(a²-b²)/a(a+b)=((a²+b²)·a(a+b))/((a²-b²)(a+b))=a(a²+b²)/(a²-b²);
(m+1-1/(1-m)):(m-m²/(m-1))=((m(1-m)+1(1-m)-1)/(1-m)):((m(m-1)-m²)/(m-1))=
=(m-m²+1-m-1)/(1-m):(m²-m-m²)/(m-1)=
=(-m²)/(1-m):(-m)/(m-1)=-m²/(-(m-1):(-m)/(m-1)=m²·(m-1)/(-m)(m-1)=-m²/m=-m;