Question

X
(6x + 51).
Х
?
69
2
.

Answer 1

Answer: x = 3, and z = 111

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