63
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.
76
79
The two numbers that add to -16 and multiply to 60 are -10 and -6. When you add them together, -10 + (-6) equals -16. When you multiply them, -10 × -6 equals 60.
-43140
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.
83
-56
-56
-56
Ten and six.
76
76
-71
64
83