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1/9k=13
We move all terms to the left:
1/9k-(13)=0
Domain of the equation: 9k!=0We multiply all the terms by the denominator
k!=0/9
k!=0
k∈R
-13*9k+1=0
Wy multiply elements
-117k+1=0
We move all terms containing k to the left, all other terms to the right
-117k=-1
k=-1/-117
k=1/117
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