math

11x + 6(3 − x) = −2
PEMDAS (do what's in the parentheses if you can, any exponents, multiplication, division, add, subtract)
6*3 6*-x
11x+18-6x = -2
5x+18 = -2
5x =-20
x = -4

Thanks for your explanation SelinaMarie.
I like it!