Answer:
m<ABC = 33°
Step-by-step explanation:
If <DBA is a right angle then that means <DBC + <CBA = 90°. When solved for x in the equation:
2x+14+x+7=90
3x+21=90
-21 -21
____________
3x = 69
---- -----
3 3
x = 23
Then distribute x into the equation for <CBA:
23+7
30°
