-21+12x=-129

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Solution for -21+12x=-129 equation: 


Simplifying
-21 + 12x = -129

Solving
-21 + 12x = -129

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 12x = -129 + 21

Combine like terms: -21 + 21 = 0
0 + 12x = -129 + 21
12x = -129 + 21

Combine like terms: -129 + 21 = -108
12x = -108

Divide each side by '12'.
x = -9

Simplifying
x = -9

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