X+9+2x+12=180

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Solution for X+9+2x+12=180 equation: 


Simplifying
X + 9 + 2x + 12 = 180

Reorder the terms:
9 + 12 + X + 2x = 180

Combine like terms: 9 + 12 = 21
21 + X + 2x = 180

Solving
21 + X + 2x = 180

Solving for variable 'X'.

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

Add '-21' to each side of the equation.
21 + X + -21 + 2x = 180 + -21

Reorder the terms:
21 + -21 + X + 2x = 180 + -21

Combine like terms: 21 + -21 = 0
0 + X + 2x = 180 + -21
X + 2x = 180 + -21

Combine like terms: 180 + -21 = 159
X + 2x = 159

Add '-2x' to each side of the equation.
X + 2x + -2x = 159 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 159 + -2x
X = 159 + -2x

Simplifying
X = 159 + -2x

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