-15-4-12=x

Solution for -15-4-12=x equation:

Simplifying
-15 + -4 + -12 = x

Combine like terms: -15 + -4 = -19
-19 + -12 = x

Combine like terms: -19 + -12 = -31
-31 = x

Solving
-31 = 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.
-31 + -1x = x + -1x

Combine like terms: x + -1x = 0
-31 + -1x = 0

Add '31' to each side of the equation.
-31 + 31 + -1x = 0 + 31

Combine like terms: -31 + 31 = 0
0 + -1x = 0 + 31
-1x = 0 + 31

Combine like terms: 0 + 31 = 31
-1x = 31

Divide each side by '-1'.
x = -31

Simplifying
x = -31