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4+m/3=12.9
We move all terms to the left:
4+m/3-(12.9)=0
We add all the numbers together, and all the variables
m/3-8.9=0
We multiply all the terms by the denominator
m-(8.9)*3=0
We add all the numbers together, and all the variables
m-26.7=0
We move all terms containing m to the left, all other terms to the right
m=26.7
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