Answer:
yz = 7.6
Step-by-step explanation:
Since, y lies in between x and z.
Thus, xy + yz = xz
⇒ yz = xz - xy
Also, we have, xy = 13.8
xz = 21.4
Hence, yz = 21.4 - 13.8
⇒ yz = 7.6