7n+9=-20n

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Solution for 7n+9=-20n equation: 



7n+9=-20n

We move all terms to the left:

7n+9-(-20n)=0

We get rid of parentheses

7n+20n+9=0

We add all the numbers together, and all the variables

27n+9=0

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

27n=-9

n=-9/27

n=-1/3

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