3m+5=4.2m+7

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Solution for 3m+5=4.2m+7 equation: 



3m+5=4.2m+7

We move all terms to the left:

3m+5-(4.2m+7)=0

We get rid of parentheses

3m-4.2m-7+5=0

We add all the numbers together, and all the variables

-1.2m-2=0

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

-1.2m=2

m=2/-1.2

m=-1+0.8/1.2

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