1 60
2 30
3 20
4 15
5 12
6 10
59, 60
-43
The two numbers you are looking for are -15 and 4. When you multiply -15 and 4, you get -60, and when you add them together, you get -13.
If you've written that correctly, there aren't two whole numbers that satisfy your conditions. -30 and 2 multiply to -60, but they add to -28.
76
-56
-56
-56
-56
83
60 and 3
(30,2)(20,3)(15,4)(12,5)(10,6)