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40n+1.20=2.40
We move all terms to the left:
40n+1.20-(2.40)=0
We add all the numbers together, and all the variables
40n+1.20-(2.4)=0
We add all the numbers together, and all the variables
40n-1.2=0
We move all terms containing n to the left, all other terms to the right
40n=1.2
n=1.2/40
n=1/33.333333333333
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