12-3x-x=12

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Solution for 12-3x-x=12 equation: 


Simplifying
12 + -3x + -1x = 12

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

Add '-12' to each side of the equation.
12 + -12 + -4x = 12 + -12

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

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

Solving
-4x = 0

Solving for variable 'x'.

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

Divide each side by '-4'.
x = 0

Simplifying
x = 0

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