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2.1+10m=7.89
We move all terms to the left:
2.1+10m-(7.89)=0
We add all the numbers together, and all the variables
10m-5.79=0
We move all terms containing m to the left, all other terms to the right
10m=5.79
m=5.79/10
m=1/1.727115716753
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