1=x+y

Solution for 1=x+y equation:

Simplifying
1 = x + y

Solving
1 = x + y

Solving for variable 'x'.

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

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

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

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

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

Divide each side by '-1'.
x = 1 + -1y

Simplifying
x = 1 + -1y