Jawabanmu

2015-12-29T22:51:48+07:00
90 = x + (x+2) + (x+4)
90 = 3x + 6
84 = 3x
28 = x

maka,
bilangan terkecil = 28
bilangan terbesar = 28+4 = 32

jumlah = 28+32 = 60

#maaf kalo salah :)