(2b/(a(a+2b))-b/(a(2-3a))+(6b+2)/(a(2-3a)+2b(2-3a))=2b/(a(a+2b))-b/(a(2-3a))+(6b+2)/(2-3a)(a+2b)=(2b(2-3a)-b(a+2b)+a(6b+2))/(a(2-3a)(a+2b)=(4b-6ab-ab-2b^2+6ab+2a)/(a(2-3a)(a+2b)=(4b-2b^2-ab+2a)/(a(2-3a)(a+2b)=(2(2b+a)-b(2b+a))/(a(2-3a)(2b+a)=(2b+a)(2-b))/(a(2-3a)(2b+a)=(2-b)/(a(2-3a)