3n-7=30

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Solution for 3n-7=30 equation: 



3n-7=30

We move all terms to the left:

3n-7-(30)=0

We add all the numbers together, and all the variables

3n-37=0

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

3n=37

n=37/3

n=12+1/3

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