X+y-18=0

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Solution for X+y-18=0 equation:


Simplifying
X + y + -18 = 0

Reorder the terms:
-18 + X + y = 0

Solving
-18 + X + y = 0

Solving for variable 'X'.

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

Add '18' to each side of the equation.
-18 + X + 18 + y = 0 + 18

Reorder the terms:
-18 + 18 + X + y = 0 + 18

Combine like terms: -18 + 18 = 0
0 + X + y = 0 + 18
X + y = 0 + 18

Combine like terms: 0 + 18 = 18
X + y = 18

Add '-1y' to each side of the equation.
X + y + -1y = 18 + -1y

Combine like terms: y + -1y = 0
X + 0 = 18 + -1y
X = 18 + -1y

Simplifying
X = 18 + -1y

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