X-90=123

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Solution for X-90=123 equation: 


Simplifying
X + -90 = 123

Reorder the terms:
-90 + X = 123

Solving
-90 + X = 123

Solving for variable 'X'.

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

Add '90' to each side of the equation.
-90 + 90 + X = 123 + 90

Combine like terms: -90 + 90 = 0
0 + X = 123 + 90
X = 123 + 90

Combine like terms: 123 + 90 = 213
X = 213

Simplifying
X = 213

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