3m+6-8m+9=-20

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Solution for 3m+6-8m+9=-20 equation:


Simplifying
3m + 6 + -8m + 9 = -20

Reorder the terms:
6 + 9 + 3m + -8m = -20

Combine like terms: 6 + 9 = 15
15 + 3m + -8m = -20

Combine like terms: 3m + -8m = -5m
15 + -5m = -20

Solving
15 + -5m = -20

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 + -5m = -20 + -15

Combine like terms: 15 + -15 = 0
0 + -5m = -20 + -15
-5m = -20 + -15

Combine like terms: -20 + -15 = -35
-5m = -35

Divide each side by '-5'.
m = 7

Simplifying
m = 7

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