(x+3)-81=0

Solution for (x+3)-81=0 equation:

Simplifying
(x + 3) + -81 = 0

Reorder the terms:
(3 + x) + -81 = 0

Remove parenthesis around (3 + x)
3 + x + -81 = 0

Reorder the terms:
3 + -81 + x = 0

Combine like terms: 3 + -81 = -78
-78 + x = 0

Solving
-78 + x = 0

Solving for variable 'x'.

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

Add '78' to each side of the equation.
-78 + 78 + x = 0 + 78

Combine like terms: -78 + 78 = 0
0 + x = 0 + 78
x = 0 + 78

Combine like terms: 0 + 78 = 78
x = 78

Simplifying
x = 78