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0.2+2.1m=4.6
We move all terms to the left:
0.2+2.1m-(4.6)=0
We add all the numbers together, and all the variables
2.1m-4.4=0
We move all terms containing m to the left, all other terms to the right
2.1m=4.4
m=4.4/2.1
m=2+0.2/2.1
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