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4.2+10m=7.65
We move all terms to the left:
4.2+10m-(7.65)=0
We add all the numbers together, and all the variables
10m-3.45=0
We move all terms containing m to the left, all other terms to the right
10m=3.45
m=3.45/10
m=2.3793103448276/6.8965517241379
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