8n=21-n

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Solution for 8n=21-n equation:



8n=21-n
We move all terms to the left:
8n-(21-n)=0
We add all the numbers together, and all the variables
8n-(-1n+21)=0
We get rid of parentheses
8n+1n-21=0
We add all the numbers together, and all the variables
9n-21=0
We move all terms containing n to the left, all other terms to the right
9n=21
n=21/9
n=2+1/3

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