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2.25(n-4.2)=n+3.28
We move all terms to the left:
2.25(n-4.2)-(n+3.28)=0
We multiply parentheses
2.25n-(n+3.28)-9.45=0
We get rid of parentheses
2.25n-n-3.28-9.45=0
We add all the numbers together, and all the variables
1.25n-12.73=0
We move all terms containing n to the left, all other terms to the right
1.25n=12.73
n=12.73/1.25
n=10+0.23/1.25
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