528
There are no two real plain-old well-behaved numbers that can do that.
The most you can get from a pair of plain old numbers that add up to 24 is (12 x 12) = 144 .
The only pair of numbers that can do what you want are:
12 + j18.974
and
12 - j18.974
575
21
What to number multiple to get 48 but add to get 13
-1
The numbers are -169, -168 and -167.
575
2 and 252 multiplied together equals 504. I wouldn't say that they "multiplied add up to", however, because it could be confusing whether you are talking about multiplication or addition.
-3 and 5
33
The numbers are: 80 and -20
21
13
What to number multiple to get 48 but add to get 13
2366
78
504 / 3 = 168 then add 1 on and take 1 off so 167 + 168 + 169 = 504
-30