30n-40=39

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Solution for 30n-40=39 equation: 



30n-40=39

We move all terms to the left:

30n-40-(39)=0

We add all the numbers together, and all the variables

30n-79=0

We move all terms containing n to the left, all other terms to the right

30n=79

n=79/30

n=2+19/30

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