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2.47+0.05n=3.12
We move all terms to the left:
2.47+0.05n-(3.12)=0
We add all the numbers together, and all the variables
0.05n-0.65=0
We move all terms containing n to the left, all other terms to the right
0.05n=0.65
n=0.65/0.05
n=13
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