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7+2.3m=20.25
We move all terms to the left:
7+2.3m-(20.25)=0
We add all the numbers together, and all the variables
2.3m-13.25=0
We move all terms containing m to the left, all other terms to the right
2.3m=13.25
m=13.25/2.3
m=5+1/1.31428571429
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