-3(1+n)=21

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Solution for -3(1+n)=21 equation: 



-3(1+n)=21

We move all terms to the left:

-3(1+n)-(21)=0

We add all the numbers together, and all the variables

-3(n+1)-21=0

We multiply parentheses

-3n-3-21=0

We add all the numbers together, and all the variables

-3n-24=0

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

-3n=24

n=24/-3

n=-8

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