-11-9=x

Solution for -11-9=x equation:

Simplifying
-11 + -9 = x

Combine like terms: -11 + -9 = -20
-20 = x

Solving
-20 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
-20 + -1x = x + -1x

Combine like terms: x + -1x = 0
-20 + -1x = 0

Add '20' to each side of the equation.
-20 + 20 + -1x = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -1x = 0 + 20
-1x = 0 + 20

Combine like terms: 0 + 20 = 20
-1x = 20

Divide each side by '-1'.
x = -20

Simplifying
x = -20