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4.2m-0.2=3.8+m
We move all terms to the left:
4.2m-0.2-(3.8+m)=0
We add all the numbers together, and all the variables
4.2m-(m+3.8)-0.2=0
We get rid of parentheses
4.2m-m-3.8-0.2=0
We add all the numbers together, and all the variables
3.2m-4=0
We move all terms containing m to the left, all other terms to the right
3.2m=4
m=4/3.2
m=1+0.8/3.2
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