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

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


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

Reorder the terms:
3 + -3(-4 + 3m) = -21
3 + (-4 * -3 + 3m * -3) = -21
3 + (12 + -9m) = -21

Combine like terms: 3 + 12 = 15
15 + -9m = -21

Solving
15 + -9m = -21

Solving for variable 'm'.

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

Add '-15' to each side of the equation.
15 + -15 + -9m = -21 + -15

Combine like terms: 15 + -15 = 0
0 + -9m = -21 + -15
-9m = -21 + -15

Combine like terms: -21 + -15 = -36
-9m = -36

Divide each side by '-9'.
m = 4

Simplifying
m = 4

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