LCM
12 and 18
LCM = 36
24 and 36
GCF=12
LCM of 4,6,8
LCM=24
24 and 40
LCM=120
60 and 84
GCF=12
GCF of 36, 60, 84
GCF= 12
36 and 48
LCM=144
126 and 189
GCF= 63
LCM of 12,15,20
LCM= 60
18 and 30
LCM= 90
180 and 270
GCF=90
LCM of 18,24,30
LCM=360
84 and 126
LCM= 252
360 and 540
GCF=180
GCF of 48, 72, 120
GCF= 24