If you are able to use decimals, there are many possibilities, but I am only listing one since there are infinite possibilities. Some examples are:
-11+12
-10+13
-9+14
-8+15
-7+16
-6+17
-5+18
-4+19
-3+20
-2+21
-1+22
-0+23
And many more!
23 is prime, so no multiplying is possible besides 23*1.
I really hope this helps!
9 & 23
118
23
How about: 17+23 = 40 as one example
To find two numbers that add up to -23, you can choose any two negative numbers whose sum equals -23. For example, -10 and -13 would work, as -10 + (-13) equals -23. Another example could be -20 and -3.
9 & 23
-397
There are no two real numbers that do, but two complex numbers do: (3.5 + i 3.5 √23) and (3.5 - i 3.5 √23) If you want them to add to 7 and multiply to -294, then the two real numbers -14 and 21 work. Or if you want them to add to -7 and multiply to -294, then the two real numbers 14 and -21 work. To add to -7 and multiply to 294, the following two complex numbers work: (-3.5 + i 3.5 √23) and (-3.5 - i 3.5 √23)
83
23
73
23 and 19 are both prime numbers and they add up to 42.
118
23
There aren't any whole numbers that satisfy these conditions. The only numbers that multiply to 23 are 23 and 1.
-27
113