X+90=15

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Solution for X+90=15 equation: 


Simplifying
X + 90 = 15

Reorder the terms:
90 + X = 15

Solving
90 + X = 15

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 = 15 + -90

Combine like terms: 90 + -90 = 0
0 + X = 15 + -90
X = 15 + -90

Combine like terms: 15 + -90 = -75
X = -75

Simplifying
X = -75

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