-1=3(n-7)-7

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Solution for -1=3(n-7)-7 equation: 



-1=3(n-7)-7

We move all terms to the left:

-1-(3(n-7)-7)=0



We calculate terms in parentheses: -(3(n-7)-7), so:

3(n-7)-7

We multiply parentheses

3n-21-7

We add all the numbers together, and all the variables

3n-28

Back to the equation:

-(3n-28)



We get rid of parentheses

-3n+28-1=0

We add all the numbers together, and all the variables

-3n+27=0

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

-3n=-27

n=-27/-3

n=+9

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