[tex]\\ \sf\bull\dashrightarrow \dfrac{-120}{-6}[/tex]
[tex]\\ \sf\bull\dashrightarrow \dfrac{120}{6}[/tex]
[tex]\\ \sf\bull\dashrightarrow \dfrac{40}{2}[/tex]
[tex]\\ \sf\bull\dashrightarrow 20[/tex]