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8n-5n+4=22+9
We move all terms to the left:
8n-5n+4-(22+9)=0
We add all the numbers together, and all the variables
8n-5n+4-31=0
We add all the numbers together, and all the variables
3n-27=0
We move all terms containing n to the left, all other terms to the right
3n=27
n=27/3
n=9
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