Question

Rút gọn phân thức

Answer 1

\(c,=\dfrac{x\left(x-y\right)}{5y\left(y-x\right)}=\dfrac{-x}{5y}\\ d,=\dfrac{x\left(x-y\right)-\left(x-y\right)}{x\left(x+y\right)-\left(x+y\right)}=\dfrac{\left(x-1\right)\left(x-y\right)}{\left(x-1\right)\left(x+y\right)}=\dfrac{x-y}{x+y}\)