42+x+y=42

Solution for 42+x+y=42 equation:

Simplifying
42 + x + y = 42

Add '-42' to each side of the equation.
42 + x + -42 + y = 42 + -42

Reorder the terms:
42 + -42 + x + y = 42 + -42

Combine like terms: 42 + -42 = 0
0 + x + y = 42 + -42
x + y = 42 + -42

Combine like terms: 42 + -42 = 0
x + y = 0

Solving
x + y = 0

Solving for variable 'x'.

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

Add '-1y' to each side of the equation.
x + y + -1y = 0 + -1y

Combine like terms: y + -1y = 0
x + 0 = 0 + -1y
x = 0 + -1y
Remove the zero:
x = -1y

Simplifying
x = -1y