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-54-9n=9+6n
We move all terms to the left:
-54-9n-(9+6n)=0
We add all the numbers together, and all the variables
-9n-(6n+9)-54=0
We get rid of parentheses
-9n-6n-9-54=0
We add all the numbers together, and all the variables
-15n-63=0
We move all terms containing n to the left, all other terms to the right
-15n=63
n=63/-15
n=-4+1/5
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