13+8n-9n+3n=20

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Solution for 13+8n-9n+3n=20 equation: 



13+8n-9n+3n=20

We move all terms to the left:

13+8n-9n+3n-(20)=0

We add all the numbers together, and all the variables

2n-7=0

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

2n=7

n=7/2

n=3+1/2

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