7. 32
GCF
8. 36:
84:
GCF
9. 18:
48:
GCF
10, 24
36:
GCF

Answer:
8.) 36:1, 2, 3, 4, 6, 9, 12, 18, 36
84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Gcf= 12
9.) 18: 1, 2, 3, 6, 9, 18
48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Gcf= 6
10.) 24: 1, 2, 3, 4, 6, 8, 12, 24
36: 1, 2, 3, 4, 6, 8, 12, 18, 36
Gcf= 12