6-5n+2n=20-77

Solution for 6-5n+2n=20-77 equation:

Simplifying
6 + -5n + 2n = 20 + -77

Combine like terms: -5n + 2n = -3n
6 + -3n = 20 + -77

Combine like terms: 20 + -77 = -57
6 + -3n = -57

Solving
6 + -3n = -57

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + -3n = -57 + -6

Combine like terms: 6 + -6 = 0
0 + -3n = -57 + -6
-3n = -57 + -6

Combine like terms: -57 + -6 = -63
-3n = -63

Divide each side by '-3'.
n = 21

Simplifying
n = 21