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2(-7n-1)-7(6+7n)=19
We move all terms to the left:
2(-7n-1)-7(6+7n)-(19)=0
We add all the numbers together, and all the variables
2(-7n-1)-7(7n+6)-19=0
We multiply parentheses
-14n-49n-2-42-19=0
We add all the numbers together, and all the variables
-63n-63=0
We move all terms containing n to the left, all other terms to the right
-63n=63
n=63/-63
n=-1
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