please help!!! will mark brainliest

Answer:
Step-by-step explanation:
Since the quadrilateral is inscribed into circle, its opposite angles are supplementary:
Substitute the values and solve for x:
Answer:
According to the property of Cyclic Quadrilateral
5x - 22 + 8x + 7 = 180
(5x + 8x) - (22 - 7) = 180
13x - 15 = 180
13x = 180 + 15
13x = 195
x = 195/13
x = 15
[tex] \\ [/tex]