-3-6=x+6

Solution for -3-6=x+6 equation:

Simplifying
-3 + -6 = x + 6

Combine like terms: -3 + -6 = -9
-9 = x + 6

Reorder the terms:
-9 = 6 + x

Solving
-9 = 6 + 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.
-9 + -1x = 6 + x + -1x

Combine like terms: x + -1x = 0
-9 + -1x = 6 + 0
-9 + -1x = 6

Add '9' to each side of the equation.
-9 + 9 + -1x = 6 + 9

Combine like terms: -9 + 9 = 0
0 + -1x = 6 + 9
-1x = 6 + 9

Combine like terms: 6 + 9 = 15
-1x = 15

Divide each side by '-1'.
x = -15

Simplifying
x = -15