The system of equations \(\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 3\) has exactly one solution. What is in this solution?
Question: the sytem of equations
xy/(x + y) = 1
xz/(x + z) = 2
yz/(y + z) = 3
has exactly one solution. What is x in this solution?
Answer: x = -8.
