$\frac{-3}{9}$ +($\frac{-17}{5}$ )-($\frac{2}{3}$ - $\frac{2}{5}$ )
= $\frac{-3}{9}$ +($\frac{-17}{5}$ )-$\frac{2}{3}$ + $\frac{2}{5}$
= ( $\frac{-3}{9}$-$\frac{2}{3}$)+($\frac{-17}{5}$ + $\frac{2}{5}$ )
= (-3/9-6/9) + (-15/5)
= -1+(-3)=-4
xin hay nhất ạ