2m+21=8m-3

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Solution for 2m+21=8m-3 equation:


Simplifying
2m + 21 = 8m + -3

Reorder the terms:
21 + 2m = 8m + -3

Reorder the terms:
21 + 2m = -3 + 8m

Solving
21 + 2m = -3 + 8m

Solving for variable 'm'.

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

Add '-8m' to each side of the equation.
21 + 2m + -8m = -3 + 8m + -8m

Combine like terms: 2m + -8m = -6m
21 + -6m = -3 + 8m + -8m

Combine like terms: 8m + -8m = 0
21 + -6m = -3 + 0
21 + -6m = -3

Add '-21' to each side of the equation.
21 + -21 + -6m = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -6m = -3 + -21
-6m = -3 + -21

Combine like terms: -3 + -21 = -24
-6m = -24

Divide each side by '-6'.
m = 4

Simplifying
m = 4

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