-3(n+7)=18

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Solution for -3(n+7)=18 equation: 



-3(n+7)=18

We move all terms to the left:

-3(n+7)-(18)=0

We multiply parentheses

-3n-21-18=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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