-x-12=2x+9

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Solution for -x-12=2x+9 equation:


Simplifying
-1x + -12 = 2x + 9

Reorder the terms:
-12 + -1x = 2x + 9

Reorder the terms:
-12 + -1x = 9 + 2x

Solving
-12 + -1x = 9 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-12 + -1x + -2x = 9 + 2x + -2x

Combine like terms: -1x + -2x = -3x
-12 + -3x = 9 + 2x + -2x

Combine like terms: 2x + -2x = 0
-12 + -3x = 9 + 0
-12 + -3x = 9

Add '12' to each side of the equation.
-12 + 12 + -3x = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -3x = 9 + 12
-3x = 9 + 12

Combine like terms: 9 + 12 = 21
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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