FPB dan KPK dari 42,60,38

42/60/38 = 2*
21/30/19 = 3
7/10/19 = 7
1/10/19 = 10
1/1/19 = 19
1/1/1

FPB = 2
KPK = 2.3.7.10.19
= 42.190
= 7980

42 = 2 . 3 . 7
60 = 2² . 3 . 5
38 = 2 . 19

KPK = 2² . 3 . 5 . 7 . 19
        = 4 . 15 . 133
        = 60 . 133 = 7980

FPB = 2
jadikan jawaban terbaik ya :-)