tolong di jawab yaa pakai cara​

tolong di jawab yaa pakai cara
​

4.

AOB = 180 - 120

AOB = 60° (B)

..

5.

8x + 20 + 4x - 8 = 180

12x = 180 - 12

x = 168/12

x = 14° (NO OPSI)

[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]