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8+3m/12=13
We move all terms to the left:
8+3m/12-(13)=0
We add all the numbers together, and all the variables
3m/12-5=0
We multiply all the terms by the denominator
3m-5*12=0
We add all the numbers together, and all the variables
3m-60=0
We move all terms containing m to the left, all other terms to the right
3m=60
m=60/3
m=20
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