Question

Tlong dijawab pke cara yang jelas

Answer 1

1. a + 30 = 180
a = 180- 30 = 150
2. 3c + 45 + 30 = 180
3c = 180 -45-30=105
c= 105 /3 = 35
sudut pqr= 180
3. 90 + 110 + 40 + 3b = 360
3b = 360-110-90-40 = 120
b = 120/3 = 40
ke bawahny ga jlas