Jawabanmu

2014-07-10T19:55:11+07:00
6 = (4 + 2 + 8 + 5 + 6 + p + 9) / 7
6 = (34 + p) / 7
6 x 7 = 34 + p
42 = 34 + p
42 - 34 = p
8 = p

2p = 2x8 = 16