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-7n+6(6n+5)=331
We move all terms to the left:
-7n+6(6n+5)-(331)=0
We multiply parentheses
-7n+36n+30-331=0
We add all the numbers together, and all the variables
29n-301=0
We move all terms containing n to the left, all other terms to the right
29n=301
n=301/29
n=10+11/29
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