x+y+3=18

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Solution for x+y+3=18 equation:


Simplifying
x + y + 3 = 18

Reorder the terms:
3 + x + y = 18

Solving
3 + x + y = 18

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 + y = 18 + -3

Reorder the terms:
3 + -3 + x + y = 18 + -3

Combine like terms: 3 + -3 = 0
0 + x + y = 18 + -3
x + y = 18 + -3

Combine like terms: 18 + -3 = 15
x + y = 15

Add '-1y' to each side of the equation.
x + y + -1y = 15 + -1y

Combine like terms: y + -1y = 0
x + 0 = 15 + -1y
x = 15 + -1y

Simplifying
x = 15 + -1y

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