3n-1=9

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Solution for 3n-1=9 equation: 



3n-1=9

We move all terms to the left:

3n-1-(9)=0

We add all the numbers together, and all the variables

3n-10=0

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

3n=10

n=10/3

n=3+1/3

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