-40-12x=x+129

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Solution for -40-12x=x+129 equation:


Simplifying
-40 + -12x = x + 129

Reorder the terms:
-40 + -12x = 129 + x

Solving
-40 + -12x = 129 + 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.
-40 + -12x + -1x = 129 + x + -1x

Combine like terms: -12x + -1x = -13x
-40 + -13x = 129 + x + -1x

Combine like terms: x + -1x = 0
-40 + -13x = 129 + 0
-40 + -13x = 129

Add '40' to each side of the equation.
-40 + 40 + -13x = 129 + 40

Combine like terms: -40 + 40 = 0
0 + -13x = 129 + 40
-13x = 129 + 40

Combine like terms: 129 + 40 = 169
-13x = 169

Divide each side by '-13'.
x = -13

Simplifying
x = -13

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