3m-7=-21

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Solution for 3m-7=-21 equation: 


Simplifying
3m + -7 = -21

Reorder the terms:
-7 + 3m = -21

Solving
-7 + 3m = -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 + 3m = -21 + 7

Combine like terms: -7 + 7 = 0
0 + 3m = -21 + 7
3m = -21 + 7

Combine like terms: -21 + 7 = -14
3m = -14

Divide each side by '3'.
m = -4.666666667

Simplifying
m = -4.666666667

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