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+2/N=40
We move all terms to the left:
+2/N-(40)=0
Domain of the equation: N!=0We multiply all the terms by the denominator
N∈R
-40*N+2=0
We add all the numbers together, and all the variables
-40N+2=0
We move all terms containing N to the left, all other terms to the right
-40N=-2
N=-2/-40
N=1/20
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