-3(n=5)=21

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Solution for -3(n=5)=21 equation: 



-3(n=5)=21

We move all terms to the left:

-3(n-(5))=0

We multiply parentheses

-3n+15=0

We move all terms containing n to the left, all other terms to the right

-3n=-15

n=-15/-3

n=+5

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