Jawabanmu

2014-08-26T15:33:07+07:00
D - 2 = 5
d = 5 + 7
7 termasuk bilangan asli
jadi jawab nya 7
eh salah maksud nya "d = 5 + 2" bukan 7
2014-08-26T16:38:20+07:00
D = {  7 }
d - 2 = 5.... d = 5 + 2 = 7