2x+x-12=0

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Solution for 2x+x-12=0 equation: 


Simplifying
2x + x + -12 = 0

Reorder the terms:
-12 + 2x + x = 0

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

Solving
-12 + 3x = 0

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x = 0 + 12

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

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

Divide each side by '3'.
x = 4

Simplifying
x = 4

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