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4.2+10m=8.43
We move all terms to the left:
4.2+10m-(8.43)=0
We add all the numbers together, and all the variables
10m-4.23=0
We move all terms containing m to the left, all other terms to the right
10m=4.23
m=4.23/10
m=1.89686098655/4.48430493274
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