Question

x+2=12
x-2y=18 help meeeeeeeeee

Answer 1

x+2=12
x=12-2
x=10

x-2y=18
10-2y=18
-2y=18-10
-2y=8
y=-4

Answer 2

x+2=12
x=12-2
x=10


x-2y=18
x-y=18/2
x-y=9

Espero ter ajudado :)