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4/5n=4
We move all terms to the left:
4/5n-(4)=0
Domain of the equation: 5n!=0We multiply all the terms by the denominator
n!=0/5
n!=0
n∈R
-4*5n+4=0
Wy multiply elements
-20n+4=0
We move all terms containing n to the left, all other terms to the right
-20n=-4
n=-4/-20
n=1/5
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