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3(n-19)=-9
We move all terms to the left:
3(n-19)-(-9)=0
We add all the numbers together, and all the variables
3(n-19)+9=0
We multiply parentheses
3n-57+9=0
We add all the numbers together, and all the variables
3n-48=0
We move all terms containing n to the left, all other terms to the right
3n=48
n=48/3
n=16
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