21m+84=0

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Solution for 21m+84=0 equation: 


Simplifying
21m + 84 = 0

Reorder the terms:
84 + 21m = 0

Solving
84 + 21m = 0

Solving for variable 'm'.

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

Add '-84' to each side of the equation.
84 + -84 + 21m = 0 + -84

Combine like terms: 84 + -84 = 0
0 + 21m = 0 + -84
21m = 0 + -84

Combine like terms: 0 + -84 = -84
21m = -84

Divide each side by '21'.
m = -4

Simplifying
m = -4

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