bantuannya ya kak pake caranya

Garis dan Sudut

<KLN + <MLN = 180°
3X + 15 + 2X + 10 = 180°
5X + 25 = 180
5X = 180 - 25
5X = 155
X = 155/5
X = 31

pelurus <KLN = <MLN
= 2X + 10
= 2 x 31 + 10
= 62 + 10
= 72° (B).

*semoga membantu. sukses selalu ^_^