Answer:
The value of x is 40.
Explanation:
The measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x.
According to the angle sum property of quadrilateral, the sum of interior angles of a quadrilateral is always 360 degree.
Since the measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x, therefore

This is the equation which is used to solve for the value of x.



Therefore the value of x is 40.