3n-9=2+12

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Solution for 3n-9=2+12 equation: 



3n-9=2+12

We move all terms to the left:

3n-9-(2+12)=0

We add all the numbers together, and all the variables

3n-9-14=0

We add all the numbers together, and all the variables

3n-23=0

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

3n=23

n=23/3

n=7+2/3

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