cari fpb dan kpk 55,70,80

55
/\
5 11

70
/\
2 35
....../\
.....5 7

80
/\
2 40
...../\
....2 20
........./\
........2 10
............./\
............2 5

55 = 5 x 11
70 = 2 x 5 x 7
80 = 2^4 x 5
KPK = 2^4 x 5 x 7 x 11 = 6.160
FPB = 5

fpb dari 55,70,80
= 5
kpk dari 55,70,80
= 2⁴x5x7x11

= 16x5x7x11
= 6160