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1+.8n=2+0.75n
We move all terms to the left:
1+.8n-(2+0.75n)=0
We add all the numbers together, and all the variables
.8n-(0.75n+2)+1=0
We get rid of parentheses
.8n-0.75n-2+1=0
We add all the numbers together, and all the variables
0.05n-1=0
We move all terms containing n to the left, all other terms to the right
0.05n=1
n=1/0.05
n=20
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