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-3(n+19)=-18
We move all terms to the left:
-3(n+19)-(-18)=0
We add all the numbers together, and all the variables
-3(n+19)+18=0
We multiply parentheses
-3n-57+18=0
We add all the numbers together, and all the variables
-3n-39=0
We move all terms containing n to the left, all other terms to the right
-3n=39
n=39/-3
n=-13
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