-1=1-5n-7

Solution for -1=1-5n-7 equation:

Simplifying
-1 = 1 + -5n + -7

Reorder the terms:
-1 = 1 + -7 + -5n

Combine like terms: 1 + -7 = -6
-1 = -6 + -5n

Solving
-1 = -6 + -5n

Solving for variable 'n'.

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

Add '5n' to each side of the equation.
-1 + 5n = -6 + -5n + 5n

Combine like terms: -5n + 5n = 0
-1 + 5n = -6 + 0
-1 + 5n = -6

Add '1' to each side of the equation.
-1 + 1 + 5n = -6 + 1

Combine like terms: -1 + 1 = 0
0 + 5n = -6 + 1
5n = -6 + 1

Combine like terms: -6 + 1 = -5
5n = -5

Divide each side by '5'.
n = -1

Simplifying
n = -1