Jawabanmu

2014-08-28T22:36:01+07:00
15 mungkin bangg...
mudahan betull...
2014-08-28T22:46:17+07:00
180 = 2pangkat2 × 3pangkat2 × 5
240 = 2pangkat4 × 3 × 5
285 = 3 × 5 × 19

FPB = 3 × 5 = 15
1 5 1