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1/7k-4/7=-7
We move all terms to the left:
1/7k-4/7-(-7)=0
Domain of the equation: 7k!=0We add all the numbers together, and all the variables
k!=0/7
k!=0
k∈R
1/7k+7-4/7=0
We calculate fractions
7!=0
There is no solution for this equation
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