Question

(2a:3(a-b))+(a-2:b-a)

Answer 1

(2a / 3(a-b)) + (a-2) / (b-a) = 
= (2a / 3(a-b)) - (a-2) / (а-b) =
= (2a / 3(a-b)) - 3(a-2) / 3(а-b) =
= (2a-3а+6) / 3(a-b) = 
= (6-а) / 3(a-b)