jawab yg isi lingkaran pake cara ya!!

6. 3x + 2x + x = 90°
6x = 90 °
x = 15 °
7. Karena sudut l = sudut mnc , maka :
2x + 30 + 3x +30 = 180°
5x + 60 = 180°
5x = 180 - 60
5x = 120
x = 24 °
8. 6x - 2 + 5x + 11 + 7x + 9= 90°
18x - 18 = 90°
18x = 90 + 18
18x = 108
x = 108 /18
x = 6°