Question

Упростите 9b/a-b*a2-ab/54b
Прошу. Помогите.

Answer 1

9b/(a-b) . (a²-ab)/54b=9b/(a-b) . a(a-b)/54b=
=9b.a.(a-b)/(a-b).54b=a/6, a≠b, b≠0