-108=-3(1-7m)

Solution for -108=-3(1-7m) equation:

Simplifying
-108 = -3(1 + -7m)
-108 = (1 * -3 + -7m * -3)
-108 = (-3 + 21m)

Solving
-108 = -3 + 21m

Solving for variable 'm'.

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

Add '-21m' to each side of the equation.
-108 + -21m = -3 + 21m + -21m

Combine like terms: 21m + -21m = 0
-108 + -21m = -3 + 0
-108 + -21m = -3

Add '108' to each side of the equation.
-108 + 108 + -21m = -3 + 108

Combine like terms: -108 + 108 = 0
0 + -21m = -3 + 108
-21m = -3 + 108

Combine like terms: -3 + 108 = 105
-21m = 105

Divide each side by '-21'.
m = -5

Simplifying
m = -5