9+3n=7n+1

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Solution for 9+3n=7n+1 equation: 



9+3n=7n+1

We move all terms to the left:

9+3n-(7n+1)=0

We get rid of parentheses

3n-7n-1+9=0

We add all the numbers together, and all the variables

-4n+8=0

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

-4n=-8

n=-8/-4

n=+2

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