4.2=-3m

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Solution for 4.2=-3m equation: 



4.2=-3m

We move all terms to the left:

4.2-(-3m)=0

We get rid of parentheses

3m+4.2=0

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

3m=-4.2

m=-4.2/3

m=-1+1/2.5

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