The missing side of the figure is solved using similar triangle to get
y = 14 and x = 9
How to find the value of x
The value of x and y is solved using similar triangle.
With this concept, we have the proportion:
11 + 7 = 18
solving for y
11 / 18 = y / 23
y = 23 * 11 / 18
y = 14.06
solving for x
7/18 = x / 23
x = 23 * 7 / 18
x = 8.94
x = 9