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-n+3(1+6n)=-99
We move all terms to the left:
-n+3(1+6n)-(-99)=0
We add all the numbers together, and all the variables
-n+3(6n+1)-(-99)=0
We add all the numbers together, and all the variables
-1n+3(6n+1)+99=0
We multiply parentheses
-1n+18n+3+99=0
We add all the numbers together, and all the variables
17n+102=0
We move all terms containing n to the left, all other terms to the right
17n=-102
n=-102/17
n=-6
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