9n+4n-7n=20

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Solution for 9n+4n-7n=20 equation: 



9n+4n-7n=20

We move all terms to the left:

9n+4n-7n-(20)=0

We add all the numbers together, and all the variables

6n-20=0

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

6n=20

n=20/6

n=3+1/3

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