Question

X - 21 = -12? please.

Answer 1

x=9

Explanation:

Answer 2

Hello!☺

`Answer:\boxed{x=9}`

`Explanation:`

`x-21=-12`

In our first/last step, we will add 21 to both sides:

`x-21+21=-12+21\\x=9`

`x=9` is your answer.

Hope this helps!☺