Answer:
4
Step-by-step explanation:
im assuming x is the top side of the trapezium because there is no picture provided.
the formula for area of trapezium is:
height x (base + (difference of the base and the topside/2))
so we would do the inverse of this:
22/4 = 5.5
7-5.5 = 1.5
1.5x2 = 3
7-3 = 4
x = 4
