Answer:
12
Step-by-step explanation:
Factors of 30: 1,2,3,5,(6),10,15,30
Factors of 42: 1,2,3,(6),7,14,21,42
30 divided by 6, 42 divided by 6
(5) + (7)= 12
i can try just put the questions up
1. a
2. b (i think)
3. b
4. a
5. d
im not sure bout all this but h ope it helps you