Respuesta :

Hrishii

Answer:

x = 4

Step-by-step explanation:

Since, line m is perpendicular bisector of line segment AC. Hence, B is the mid point of AC.

Therefore

AB = BC

4x - 1 = 2x + 7

4x - 2x = 7 + 1

2x = 8

x = 8/2

x = 4