X+y+39=90

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Solution for X+y+39=90 equation:


Simplifying
X + y + 39 = 90

Reorder the terms:
39 + X + y = 90

Solving
39 + X + y = 90

Solving for variable 'X'.

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

Add '-39' to each side of the equation.
39 + X + -39 + y = 90 + -39

Reorder the terms:
39 + -39 + X + y = 90 + -39

Combine like terms: 39 + -39 = 0
0 + X + y = 90 + -39
X + y = 90 + -39

Combine like terms: 90 + -39 = 51
X + y = 51

Add '-1y' to each side of the equation.
X + y + -1y = 51 + -1y

Combine like terms: y + -1y = 0
X + 0 = 51 + -1y
X = 51 + -1y

Simplifying
X = 51 + -1y

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