+0

# Any help would be appreciated Melody or CPhill help please.

+8
81
2
+359

The system of equations

$$\frac{xy}{x+y}=1, \frac{xz}{x+z}=2, \frac{yz}{y+z}=3$$
has exactly one solution. What is $$z$$ in this solution?

Jul 15, 2020

#1
-1

Try subsitution

Jul 15, 2020
#2
0

(x,y,z) = (8/5,8/3,-8)

Jul 15, 2020