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m/3+5=21
We move all terms to the left:
m/3+5-(21)=0
We add all the numbers together, and all the variables
m/3-16=0
We multiply all the terms by the denominator
m-16*3=0
We add all the numbers together, and all the variables
m-48=0
We move all terms containing m to the left, all other terms to the right
m=48
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