please jawab sekarang yah penting banget

4. a) 2x+38+132= 360°
2x= 360-38+132
2x= 190
x= 190÷2 =95

b) ABD+DBC= 180°
6x+2x= 180
8x= 180
x= 180÷8= 22,5

A. x=95
132+38+2x =360
170+2x = 360
2x = 190
x = 95
B. 6x+2x = 180
8x = 180
x = 180/8
x = 22,5