tolong kak!!....................
Jawab:
jenis sudut
<KLN + < NLM = 180 (berpelurus)
3x+ 15 + 2x + 10 = 180
5x + 25 =180
5x = 180- 25
5x =155
x = 31
<MLN = 2x+10
= 2(31) + 10
= 72°