9-6n+4n=49-80

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Solution for 9-6n+4n=49-80 equation: 



9-6n+4n=49-80

We move all terms to the left:

9-6n+4n-(49-80)=0

We add all the numbers together, and all the variables

-6n+4n+9-(-31)=0

We add all the numbers together, and all the variables

-2n+40=0

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

-2n=-40

n=-40/-2

n=+20

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