Tolong bantu donk no 3,4,5 pakai caranya.mksh

3 A.
180 = 2x + 3x
180 = 5x
180/5 = x
36 = x

3B.
ADB = 2x
ADB = 2 x 36
ADB = 72

3C.
BDC = 3x
BDC = 3 x 36
BDC = 108

4.
3x + 30 = 90
3x = 90 - 30
3x = 60
x = 60/3
x = 20

5A.
4x + 2x = 90
6x = 90
x = 90/6
x = 15

5B.
AOB = 2x
AOB = 2 x 15
AOB = 30

5C.
BOC = 4x
BOC = 4 x 15
BOC = 60