Oh, what a lovely little math puzzle we have here! Let's see, if we have two numbers that add up to 11 and multiply to 18, we can think of the numbers 9 and 2. They add up to 11 (9 + 2 = 11) and multiply to 18 (9 x 2 = 18). Just like painting, sometimes all we need is a little creativity and problem-solving to find the beauty in numbers.
5 and -3
-22
-1
The numbers are: -5 and 3
199
That depends whether you want to add the numbers, to multiply them, or what.
-7
-13
-1
47
10
-17