The two numbers that add up to -18 and multiply to -24 are -12 and -6. When you add them together, -12 + -6 equals -18. When you multiply them, -12 * -6 equals 72, but since we need the product to be -24, the correct pairs are -12 and -6.
132
-1
if you multiply them it adds up to 516
-180
Assuming that "adds up to" means "its digits add up to" 888
132
-27
29
How about: 2 and 8
18 and 18
-408
-1
if you multiply them it adds up to 516
-13
24 and 5
-180
-325