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00.6n-0.3=-0.21
We move all terms to the left:
00.6n-0.3-(-0.21)=0
We add all the numbers together, and all the variables
00.6n-0.09=0
We move all terms containing n to the left, all other terms to the right
00.6n=0.09
n=0.09/00.6
n=0.09/00.6
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