-10x-21=129

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Solution for -10x-21=129 equation: 


Simplifying
-10x + -21 = 129

Reorder the terms:
-21 + -10x = 129

Solving
-21 + -10x = 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 + -10x = 129 + 21

Combine like terms: -21 + 21 = 0
0 + -10x = 129 + 21
-10x = 129 + 21

Combine like terms: 129 + 21 = 150
-10x = 150

Divide each side by '-10'.
x = -15

Simplifying
x = -15

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