Respuesta :

Answer:

  • x = 6
  • YZ = 18

Step-by-step explanation:

We assume this is a geometry question in which point Y is between X and Z on the segment XZ. Then the appropriate relation is ...

  XY +YZ = XZ

  4x +3x = 42

  7x = 42

  x = 6

  3x = 18 = YZ