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ABC = 2(8x)
ABC = 16 x
DCB = 2(ACD)
DCB = 2(7x)
DCB = 14x
ABC + DCB = 180 (sudut sepihak)
16x + 14x = 180
30x = 180
x = 180 : 30
x = 6
ABC = 16x
ABC = 16(6)
ABC = 96
Jawaban: B