x+2x+3z=12

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Solution for x+2x+3z=12 equation: 


Simplifying
x + 2x + 3z = 12

Combine like terms: x + 2x = 3x
3x + 3z = 12

Solving
3x + 3z = 12

Solving for variable 'x'.

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

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

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

Divide each side by '3'.
x = 4 + -1z

Simplifying
x = 4 + -1z

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