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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

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



We calculate terms in parentheses: -(-3(3n+1)), so:

-3(3n+1)

We multiply parentheses

-9n-3

Back to the equation:

-(-9n-3)



We get rid of parentheses

-3n+9n+3+3=0

We add all the numbers together, and all the variables

6n+6=0

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

6n=-6

n=-6/6

n=-1

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