There are 7 red candies in a pack, 9 blue candies in a pack, and 12 pink candies in a pack. if your wonderful math teacher wants to split the candy for their students so that there is an equal number in each bag. how many candies must be in each bag to ensure that each bag has an equal number of red, blue, and pink candies in it?

Given:
7 red candies
9 blue candies
12 pink candies

Condition:
Number of bags that has equal number of candies.

We can do 7 bags with 1 colored candy each. There will be an excess of 2 blue candies and 5 pink candies.

We can do 4 bags with 1 red candy, 2 blue candies, 3 pink candies. There will be an excess of 3 red candies and 1 blue candy.

We can do 3 bags with 2 red candies, 3 blue candies, 4 pink candies. There will be an excess of 1 red candy.

The pie is multyplued by the second step