X+y-8=31

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Solution for X+y-8=31 equation:


Simplifying
X + y + -8 = 31

Reorder the terms:
-8 + X + y = 31

Solving
-8 + X + y = 31

Solving for variable 'X'.

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

Add '8' to each side of the equation.
-8 + X + 8 + y = 31 + 8

Reorder the terms:
-8 + 8 + X + y = 31 + 8

Combine like terms: -8 + 8 = 0
0 + X + y = 31 + 8
X + y = 31 + 8

Combine like terms: 31 + 8 = 39
X + y = 39

Add '-1y' to each side of the equation.
X + y + -1y = 39 + -1y

Combine like terms: y + -1y = 0
X + 0 = 39 + -1y
X = 39 + -1y

Simplifying
X = 39 + -1y

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