-9=3n+4n+5

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Solution for -9=3n+4n+5 equation: 



-9=3n+4n+5

We move all terms to the left:

-9-(3n+4n+5)=0

We add all the numbers together, and all the variables

-(7n+5)-9=0

We get rid of parentheses

-7n-5-9=0

We add all the numbers together, and all the variables

-7n-14=0

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

-7n=14

n=14/-7

n=-2

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