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7(n+6)-3n=39+7n
We move all terms to the left:
7(n+6)-3n-(39+7n)=0
We add all the numbers together, and all the variables
7(n+6)-3n-(7n+39)=0
We add all the numbers together, and all the variables
-3n+7(n+6)-(7n+39)=0
We multiply parentheses
-3n+7n-(7n+39)+42=0
We get rid of parentheses
-3n+7n-7n-39+42=0
We add all the numbers together, and all the variables
-3n+3=0
We move all terms containing n to the left, all other terms to the right
-3n=-3
n=-3/-3
n=1
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