4x+x-3x=12

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Solution for 4x+x-3x=12 equation: 


Simplifying
4x + x + -3x = 12

Combine like terms: 4x + x = 5x
5x + -3x = 12

Combine like terms: 5x + -3x = 2x
2x = 12

Solving
2x = 12

Solving for variable 'x'.

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

Divide each side by '2'.
x = 6

Simplifying
x = 6

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