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3.9+10m=8.31
We move all terms to the left:
3.9+10m-(8.31)=0
We add all the numbers together, and all the variables
10m-4.41=0
We move all terms containing m to the left, all other terms to the right
10m=4.41
m=4.41/10
m=1.8298755186722/4.149377593361
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