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n=22.2n+9
We move all terms to the left:
n-(22.2n+9)=0
We get rid of parentheses
n-22.2n-9=0
We add all the numbers together, and all the variables
-21.2n-9=0
We move all terms containing n to the left, all other terms to the right
-21.2n=9
n=9/-21.2
n=-3/7.0666666666667
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