3n-9=4

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Solution for 3n-9=4 equation: 



3n-9=4

We move all terms to the left:

3n-9-(4)=0

We add all the numbers together, and all the variables

3n-13=0

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

3n=13

n=13/3

n=4+1/3

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