tolong dibantu yaa no 24 dan pakai cara yaa

<BEC = 180*- (180* - 102*) - (180* - 148*)
<BEC = 180* - 78* - 32*
<BEC = 70*

jawaban B

LEBC = 180° -102° = 78°
LBCE = 180° - 148° = 32°
LBEC = 180° - (78°+32°) = 180°- 110°= 70°

B .70°