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3.2n+0.99=3.13n+12
We move all terms to the left:
3.2n+0.99-(3.13n+12)=0
We get rid of parentheses
3.2n-3.13n-12+0.99=0
We add all the numbers together, and all the variables
0.07n-11.01=0
We move all terms containing n to the left, all other terms to the right
0.07n=11.01
n=11.01/0.07
n=157+0.02/0.07
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