x+2x-18=12

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Solution for x+2x-18=12 equation:


Simplifying
x + 2x + -18 = 12

Reorder the terms:
-18 + x + 2x = 12

Combine like terms: x + 2x = 3x
-18 + 3x = 12

Solving
-18 + 3x = 12

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 3x = 12 + 18

Combine like terms: -18 + 18 = 0
0 + 3x = 12 + 18
3x = 12 + 18

Combine like terms: 12 + 18 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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