3-4(2m-2)=-21

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Solution for 3-4(2m-2)=-21 equation: 


Simplifying
3 + -4(2m + -2) = -21

Reorder the terms:
3 + -4(-2 + 2m) = -21
3 + (-2 * -4 + 2m * -4) = -21
3 + (8 + -8m) = -21

Combine like terms: 3 + 8 = 11
11 + -8m = -21

Solving
11 + -8m = -21

Solving for variable 'm'.

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

Add '-11' to each side of the equation.
11 + -11 + -8m = -21 + -11

Combine like terms: 11 + -11 = 0
0 + -8m = -21 + -11
-8m = -21 + -11

Combine like terms: -21 + -11 = -32
-8m = -32

Divide each side by '-8'.
m = 4

Simplifying
m = 4

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