At the pet fair, there are 42 dogs and 35 cats.

the pets must be split into small groups so that there are the same number of dogs in each group and the same number of cats in each group.

a. to find out the greatest number of groups that can be made so that each animal is in a group, would you use gcf or lcm?

b. show your work to find the greatest number of groups that can be made so that each animal is in a group.

c. what is the greatest number of groups that can be made so that each animal is in a group? explain how you determined your answer (what you did in part b to get to your answer and why).