Answer:
x = 34
Explanation:
according to the problem ::
(2x + 9)° + (3x + 1)° = 180° [ since, the opposite angles of a cyclic quadrilateral are supplementary ]
or, 2x + 9 + 3x + 1 = 180
or, 2x + 3x = 180 - 10
or, 5x = 170
or, x = 170 / 5
or, x = 34
therefore, the value of x is 34°
hope that helped ..