-m-8=12.4

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Solution for -m-8=12.4 equation: 


Simplifying
-1m + -8 = 12.4

Reorder the terms:
-8 + -1m = 12.4

Solving
-8 + -1m = 12.4

Solving for variable 'm'.

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

Add '8' to each side of the equation.
-8 + 8 + -1m = 12.4 + 8

Combine like terms: -8 + 8 = 0
0 + -1m = 12.4 + 8
-1m = 12.4 + 8

Combine like terms: 12.4 + 8 = 20.4
-1m = 20.4

Divide each side by '-1'.
m = -20.4

Simplifying
m = -20.4

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