Question

ax+ay-bx-by pe
xy+x la puterea 2

Answer 1

$(ax + ay-bx-by)/(xy+ x^{2} ) = (x+y)*(a-b)/x(x+y) = (a-b)/x$

Answer 2

a(x+y)-b(x+y)/x(y+x)=
(x+y)(a-b)/x(x+y)
se simplifica x+y
(a-b)/x