9=7n+1-5n

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Solution for 9=7n+1-5n equation: 



9=7n+1-5n

We move all terms to the left:

9-(7n+1-5n)=0

We add all the numbers together, and all the variables

-(2n+1)+9=0

We get rid of parentheses

-2n-1+9=0

We add all the numbers together, and all the variables

-2n+8=0

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

-2n=-8

n=-8/-2

n=+4

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