Answer:
36.5 degrees
Explanation:
angle abc is a straight angle ( which is 180 degrees )therefore:
angle ABD + angle DBC = angle ABC
substituting the given measurements gives us=
3x + 22 + x - 4 = 180
4x = 162
x = 40.5
the question asks us to find measure of angle DBC so we substitute x which =
measure DBC = x - 4
measure DBC = 40.5 - 4
measure DBC = 36.5 degrees
hope this helps!! :)