X
(6x + 51).
Х
?
69
2
.
![X 6x 51 Х 69 2 class=](https://us-static.z-dn.net/files/dfc/195f8b7e61b2ec13f68c2a461b253532.png)
Answer: x = 3, and z = 111
Step-by-step explanation:
The opposite angles 69 and 6x + 51 are equal:
6x+51 = 69
x = 3
Angle z and angle 69 share a straight line, so the sums of theeri angles is 180:
z + 69 = 180
z = 111