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5m-12.7=13.8
We move all terms to the left:
5m-12.7-(13.8)=0
We add all the numbers together, and all the variables
5m-26.5=0
We move all terms containing m to the left, all other terms to the right
5m=26.5
m=26.5/5
m=5+1/3.3333333333333
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