X+15+135=180

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Solution for X+15+135=180 equation: 


Simplifying
X + 15 + 135 = 180

Reorder the terms:
15 + 135 + X = 180

Combine like terms: 15 + 135 = 150
150 + X = 180

Solving
150 + X = 180

Solving for variable 'X'.

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

Add '-150' to each side of the equation.
150 + -150 + X = 180 + -150

Combine like terms: 150 + -150 = 0
0 + X = 180 + -150
X = 180 + -150

Combine like terms: 180 + -150 = 30
X = 30

Simplifying
X = 30

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