Question

Alguém pode resolver?
-9/5 - ( -6/10)

Answer 1

$- \dfrac{9}{5} -\left(- \dfrac{6}{10} \right)\to\\\\\\ -\dfrac{9}{5} +\dfrac{6}{10} \to~~ mmc=10\\\\\\ \dfrac{-18+6}{10} \to \\\\\\ \boxed{-\frac{12}{10}}$