-1=2(n-1)

Solution for -1=2(n-1) equation:

Simplifying
-1 = 2(n + -1)

Reorder the terms:
-1 = 2(-1 + n)
-1 = (-1 * 2 + n * 2)
-1 = (-2 + 2n)

Solving
-1 = -2 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
-1 + -2n = -2 + 2n + -2n

Combine like terms: 2n + -2n = 0
-1 + -2n = -2 + 0
-1 + -2n = -2

Add '1' to each side of the equation.
-1 + 1 + -2n = -2 + 1

Combine like terms: -1 + 1 = 0
0 + -2n = -2 + 1
-2n = -2 + 1

Combine like terms: -2 + 1 = -1
-2n = -1

Divide each side by '-2'.
n = 0.5

Simplifying
n = 0.5