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-27+3n=3+9n
We move all terms to the left:
-27+3n-(3+9n)=0
We add all the numbers together, and all the variables
3n-(9n+3)-27=0
We get rid of parentheses
3n-9n-3-27=0
We add all the numbers together, and all the variables
-6n-30=0
We move all terms containing n to the left, all other terms to the right
-6n=30
n=30/-6
n=-5
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