16
65
37
A positive number added to a negative number may be either positive or negative depending on the magnititude ( absolute value) of the numbers. But a positive number multiplied by a negative number is always negative.
-1540
8
3, -15
145
Negetive 28 and 1
15 and -6
24
-8 and 7
6 and -5
67
-4 and -25
-3 and 6
15 and -3
65