X+2x=18-3

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Solution for X+2x=18-3 equation: 


Simplifying
X + 2x = 18 + -3

Combine like terms: 18 + -3 = 15
X + 2x = 15

Solving
X + 2x = 15

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 = 15 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 15 + -2x
X = 15 + -2x

Simplifying
X = 15 + -2x

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