x+123=180

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Solution for x+123=180 equation: 


Simplifying
x + 123 = 180

Reorder the terms:
123 + x = 180

Solving
123 + x = 180

Solving for variable 'x'.

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

Add '-123' to each side of the equation.
123 + -123 + x = 180 + -123

Combine like terms: 123 + -123 = 0
0 + x = 180 + -123
x = 180 + -123

Combine like terms: 180 + -123 = 57
x = 57

Simplifying
x = 57

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