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0.06n+0.3=0.21
We move all terms to the left:
0.06n+0.3-(0.21)=0
We add all the numbers together, and all the variables
0.06n+0.09=0
We move all terms containing n to the left, all other terms to the right
0.06n=-0.09
n=-0.09/0.06
n=-1+0.03/0.06
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