3=0.2m-(-7)

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Solution for 3=0.2m-(-7) equation: 



3=0.2m-(-7)

We move all terms to the left:

3-(0.2m-(-7))=0



We calculate terms in parentheses: -(0.2m-(-7)), so:

0.2m-(-7)

We add all the numbers together, and all the variables

0.2m+7

Back to the equation:

-(0.2m+7)



We get rid of parentheses

-0.2m-7+3=0

We add all the numbers together, and all the variables

-0.2m-4=0

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

-0.2m=4

m=4/-0.2

m=-20

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