1.
31 and 5
2
12.ry and try
3
16m and -2m
4
-6mn and 11mn
5.
Z ryz and Bryz
6.
-11x and -42-
7.
- 10r and 3.2
8.
-9y. 12y and
21m-10m and -11m
9.
10
23z. 147.-25z and 10z​