pls tolong di jawab

Sudut Keliling

30. <HEG = <HFG = 42
<FJG = 180 - 45 - 42 = 180- 87 = 93

31. 
< L +< K = 180
8x +7x = 180
15x = 180
x = 12

<M= 6x + 7
<M = 6(12) + 7
<M = 72+7
<M = 79

< K+ < M = 180
< K = 180 -< M
< K = 180 - 79
<K  = 101