x+2x=x+18

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Solution for x+2x=x+18 equation: 


Simplifying
x + 2x = x + 18

Combine like terms: x + 2x = 3x
3x = x + 18

Reorder the terms:
3x = 18 + x

Solving
3x = 18 + 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 = 18 + x + -1x

Combine like terms: 3x + -1x = 2x
2x = 18 + x + -1x

Combine like terms: x + -1x = 0
2x = 18 + 0
2x = 18

Divide each side by '2'.
x = 9

Simplifying
x = 9

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