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3/10(n)=9
We move all terms to the left:
3/10(n)-(9)=0
Domain of the equation: 10n!=0We multiply all the terms by the denominator
n!=0/10
n!=0
n∈R
-9*10n+3=0
Wy multiply elements
-90n+3=0
We move all terms containing n to the left, all other terms to the right
-90n=-3
n=-3/-90
n=1/30
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