Jawabanmu

2014-08-07T23:44:04+07:00
A. 75 dan 80
 75 = 5 x 5 x 3
 80 = 2 x 2 x 2 x 2 x 5
KPK = 5 x 5  x 3 x 2 x 2 x 2 x 2
       = 1200
b. 6, 10 dan 15
 6 = 2  x 3
 10 = 2  x 5
 15 = 3 x 5
KPK = 2 x 3 x 5 = 30
c. 8, 14 dan 18
 8 = 2  x 2 x 2
 14 = 2  x 7
 18 = 2 x 3 x 3
KPK = 2 x 2 x 2 x 3 x 3 x 7 = 504
d. 15, 21, dan 18
 15 = 3 x 5
 21 = 3 x 7
 18 = 2 x 3 x 3
KPK = 3 x 3 x 5 x 7 x 2 = 630
e. 18, 24, 22
 18 = 2 x 3 x 3
 24 = 2 x 2 x 2 x 3
 22 = 2 x 11
KPK = 2 x 2 x 2 x 3 x 3 x 11 = 792
7 3 7