tolong donk jawsbkan tgs sklh hrs di antr bsok jawsb pakai cara doal no 16 s/d 20

16. 3x + 4x + 5x = 180
12x = 180
x = 15
sudut terbesar = 5x = 5×15=75 (A)

17. 180-(57+86)
= 37 (D)

18.3x + 5x + 10x = 180
18x = 180
x = 10
sudut Q = 5x = 5×10 = 50 (B)

19. (5x+30) + 6x + (2x+20) = 180
13x + 50 = 180
13x = 130
x = 10
sudut Q =6x = 6×10 = 60 (A)

20. 3x + 10 + 3x + 4x + 20 = 180
10x + 30 = 180
10x = 150
x = 15
sudut BAC = 4x + 20 = 4(15) + 20 = 80
sudut CAP = 180 - 80 = 100 (A)