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7-m/5=13
We move all terms to the left:
7-m/5-(13)=0
We add all the numbers together, and all the variables
-m/5-6=0
We multiply all the terms by the denominator
-m-6*5=0
We add all the numbers together, and all the variables
-1m-30=0
We move all terms containing m to the left, all other terms to the right
-m=30
m=30/-1
m=-30
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