-3.1(0.1m-0.4)=21.39

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Solution for -3.1(0.1m-0.4)=21.39 equation: 



-3.1(0.1m-0.4)=21.39

We move all terms to the left:

-3.1(0.1m-0.4)-(21.39)=0

We add all the numbers together, and all the variables

-3.1(0.1m-0.4)-21.39=0

We multiply parentheses

-0m+1.24-21.39=0

We add all the numbers together, and all the variables

-1m-20.15=0

We move all terms containing m to the left, all other terms to the right

-m=20.15

m=20.15/-1

m=-20+0.15/1

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