(x+y)+77=

Solution for (x+y)+77= equation:

Simplifying
(x + y) + 77 = 0

Remove parenthesis around (x + y)
x + y + 77 = 0

Reorder the terms:
77 + x + y = 0

Solving
77 + x + y = 0

Solving for variable 'x'.

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

Add '-77' to each side of the equation.
77 + x + -77 + y = 0 + -77

Reorder the terms:
77 + -77 + x + y = 0 + -77

Combine like terms: 77 + -77 = 0
0 + x + y = 0 + -77
x + y = 0 + -77

Combine like terms: 0 + -77 = -77
x + y = -77

Add '-1y' to each side of the equation.
x + y + -1y = -77 + -1y

Combine like terms: y + -1y = 0
x + 0 = -77 + -1y
x = -77 + -1y

Simplifying
x = -77 + -1y