-3x=x+12

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Solution for -3x=x+12 equation: 


Simplifying
-3x = x + 12

Reorder the terms:
-3x = 12 + x

Solving
-3x = 12 + 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.
-3x + -1x = 12 + x + -1x

Combine like terms: -3x + -1x = -4x
-4x = 12 + x + -1x

Combine like terms: x + -1x = 0
-4x = 12 + 0
-4x = 12

Divide each side by '-4'.
x = -3

Simplifying
x = -3

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