Respuesta :

Tyuzki

-12 + _ = -20

-12 + (-18) = -20✔

so the answers is = -18

You can turn this into an algebraic equation by changing the equation to -12 + x = -20. Our goal is to solve for x. This can be done by adding 12 to both sides. This gives us x = -8.

-12 + (-8) does equal -20.