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1/5n=40
We move all terms to the left:
1/5n-(40)=0
Domain of the equation: 5n!=0We multiply all the terms by the denominator
n!=0/5
n!=0
n∈R
-40*5n+1=0
Wy multiply elements
-200n+1=0
We move all terms containing n to the left, all other terms to the right
-200n=-1
n=-1/-200
n=1/200
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