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8n/5+10=21
We move all terms to the left:
8n/5+10-(21)=0
We add all the numbers together, and all the variables
8n/5-11=0
We multiply all the terms by the denominator
8n-11*5=0
We add all the numbers together, and all the variables
8n-55=0
We move all terms containing n to the left, all other terms to the right
8n=55
n=55/8
n=6+7/8
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