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21+8n=50-11n
We move all terms to the left:
21+8n-(50-11n)=0
We add all the numbers together, and all the variables
8n-(-11n+50)+21=0
We get rid of parentheses
8n+11n-50+21=0
We add all the numbers together, and all the variables
19n-29=0
We move all terms containing n to the left, all other terms to the right
19n=29
n=29/19
n=1+10/19
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