3.9=0.78(m+2)

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Solution for 3.9=0.78(m+2) equation: 



3.9=0.78(m+2)

We move all terms to the left:

3.9-(0.78(m+2))=0



We calculate terms in parentheses: -(0.78(m+2)), so:

0.78(m+2)

We multiply parentheses

0.78m+1.56

Back to the equation:

-(0.78m+1.56)



We get rid of parentheses

-0.78m-1.56+3.9=0

We add all the numbers together, and all the variables

-0.78m+2.34=0

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

-0.78m=-2.34

m=-2.34/-0.78

m=2+0.78/0.78

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