90=-2(3-6m)

Solution for 90=-2(3-6m) equation:

Simplifying
90 = -2(3 + -6m)
90 = (3 * -2 + -6m * -2)
90 = (-6 + 12m)

Solving
90 = -6 + 12m

Solving for variable 'm'.

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

Add '-12m' to each side of the equation.
90 + -12m = -6 + 12m + -12m

Combine like terms: 12m + -12m = 0
90 + -12m = -6 + 0
90 + -12m = -6

Add '-90' to each side of the equation.
90 + -90 + -12m = -6 + -90

Combine like terms: 90 + -90 = 0
0 + -12m = -6 + -90
-12m = -6 + -90

Combine like terms: -6 + -90 = -96
-12m = -96

Divide each side by '-12'.
m = 8

Simplifying
m = 8