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5.1+1.3n=1.72
We move all terms to the left:
5.1+1.3n-(1.72)=0
We add all the numbers together, and all the variables
1.3n+3.38=0
We move all terms containing n to the left, all other terms to the right
1.3n=-3.38
n=-3.38/1.3
n=-2+0.78/1.3
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