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-9/7n=5
We move all terms to the left:
-9/7n-(5)=0
Domain of the equation: 7n!=0We multiply all the terms by the denominator
n!=0/7
n!=0
n∈R
-5*7n-9=0
Wy multiply elements
-35n-9=0
We move all terms containing n to the left, all other terms to the right
-35n=9
n=9/-35
n=-9/35
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