Answer:
m<ABD = 24°
m<DBC = 119°
Step-by-step explanation:
m<ABD + m<DBC = m<ABC
2x - 40 + 3x + 23 = 143
5x - 17 = 143
5x = 160
x = 32
m<ABD = 2x - 40 = 2(32) - 40 = 24
m<DBC = 3x + 23 = 3(32) + 23 = 119
