Answer
1. What is the greatest number of groups that he can form?
2.Allen has 18 blue balls and 27 red balls
3.minus
4.18 27
-2 -2
-2 -2
-2 -2
-2 -2
-2 -2
-2 -2
-2 -2
-2 -2
-2 -2
___________________________
0 7
5. 9 groups can be form
this? or 1- 1- if 1-1 its 18 groups
i think just ask what -1? or -2?
