X+x+3=90

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Solution for X+x+3=90 equation:


Simplifying
X + x + 3 = 90

Reorder the terms:
3 + X + x = 90

Solving
3 + X + x = 90

Solving for variable 'X'.

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

Add '-3' to each side of the equation.
3 + X + -3 + x = 90 + -3

Reorder the terms:
3 + -3 + X + x = 90 + -3

Combine like terms: 3 + -3 = 0
0 + X + x = 90 + -3
X + x = 90 + -3

Combine like terms: 90 + -3 = 87
X + x = 87

Add '-1x' to each side of the equation.
X + x + -1x = 87 + -1x

Combine like terms: x + -1x = 0
X + 0 = 87 + -1x
X = 87 + -1x

Simplifying
X = 87 + -1x

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