X+2x=18+12

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


Simplifying
X + 2x = 18 + 12

Combine like terms: 18 + 12 = 30
X + 2x = 30

Solving
X + 2x = 30

Solving for variable 'X'.

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

Add '-2x' to each side of the equation.
X + 2x + -2x = 30 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 30 + -2x
X = 30 + -2x

Simplifying
X = 30 + -2x

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