twelve
and
minus five
12 x -5 = -60
12 - 5 = 7
-43
Factors are multiplied, not added. The question needs to be something like, "Which two factors of thirty add up to 11?" The answer would then be 5 and 6.
29+31 = 60
They are: 29+31 = 60
60
-32
119
60 and 59
2, 4, 6, 10, 12, 20, 30, 60 add up to 144.
Any of the factors up to 60 can be common.
83
9 and -3