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4/n=15
We move all terms to the left:
4/n-(15)=0
Domain of the equation: n!=0We multiply all the terms by the denominator
n∈R
-15*n+4=0
We add all the numbers together, and all the variables
-15n+4=0
We move all terms containing n to the left, all other terms to the right
-15n=-4
n=-4/-15
n=4/15
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