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9n-7=6+14
We move all terms to the left:
9n-7-(6+14)=0
We add all the numbers together, and all the variables
9n-7-20=0
We add all the numbers together, and all the variables
9n-27=0
We move all terms containing n to the left, all other terms to the right
9n=27
n=27/9
n=3
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