-3-9=-6+x

Solution for -3-9=-6+x equation:

Simplifying
-3 + -9 = -6 + x

Combine like terms: -3 + -9 = -12
-12 = -6 + x

Solving
-12 = -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.
-12 + -1x = -6 + x + -1x

Combine like terms: x + -1x = 0
-12 + -1x = -6 + 0
-12 + -1x = -6

Add '12' to each side of the equation.
-12 + 12 + -1x = -6 + 12

Combine like terms: -12 + 12 = 0
0 + -1x = -6 + 12
-1x = -6 + 12

Combine like terms: -6 + 12 = 6
-1x = 6

Divide each side by '-1'.
x = -6

Simplifying
x = -6