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Verified answer
< K = < M sifat sudut berhadapan2y -15° = 57 °-y
2y+ y =57° +15°
3y = 72
y =72/3
y =24°
< K = 2y-15 =2.24 - 15 = 48° - 15° = 33°
< L = 180° - <K =180° - 33°= 147° sifat sudut bersisian
< N = < L =147°