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9.99+1.29n=50
We move all terms to the left:
9.99+1.29n-(50)=0
We add all the numbers together, and all the variables
1.29n-40.01=0
We move all terms containing n to the left, all other terms to the right
1.29n=40.01
n=40.01/1.29
n=31+0.019999999999996/1.29
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