-128=-2+7(3n+6)

Solution for -128=-2+7(3n+6) equation:

Simplifying
-128 = -2 + 7(3n + 6)

Reorder the terms:
-128 = -2 + 7(6 + 3n)
-128 = -2 + (6 * 7 + 3n * 7)
-128 = -2 + (42 + 21n)

Combine like terms: -2 + 42 = 40
-128 = 40 + 21n

Solving
-128 = 40 + 21n

Solving for variable 'n'.

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

Add '-21n' to each side of the equation.
-128 + -21n = 40 + 21n + -21n

Combine like terms: 21n + -21n = 0
-128 + -21n = 40 + 0
-128 + -21n = 40

Add '128' to each side of the equation.
-128 + 128 + -21n = 40 + 128

Combine like terms: -128 + 128 = 0
0 + -21n = 40 + 128
-21n = 40 + 128

Combine like terms: 40 + 128 = 168
-21n = 168

Divide each side by '-21'.
n = -8

Simplifying
n = -8