-7=1-3n+1

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Solution for -7=1-3n+1 equation: 



-7=1-3n+1

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-3n+2)-7=0

We get rid of parentheses

3n-2-7=0

We add all the numbers together, and all the variables

3n-9=0

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

3n=9

n=9/3

n=3

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