8m-2-6m+9=21

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Solution for 8m-2-6m+9=21 equation:


Simplifying
8m + -2 + -6m + 9 = 21

Reorder the terms:
-2 + 9 + 8m + -6m = 21

Combine like terms: -2 + 9 = 7
7 + 8m + -6m = 21

Combine like terms: 8m + -6m = 2m
7 + 2m = 21

Solving
7 + 2m = 21

Solving for variable 'm'.

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

Add '-7' to each side of the equation.
7 + -7 + 2m = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 2m = 21 + -7
2m = 21 + -7

Combine like terms: 21 + -7 = 14
2m = 14

Divide each side by '2'.
m = 7

Simplifying
m = 7

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