36
It is: 5+13+18 = 36
14 + 13 + 9 = 36
36 + 23 = 59
49/36 or 1 13/36
13
11 plus 12 plus 13 can satisfy this
13 + 16 + 18 + 20 + 21 + 26 + 27 + 27 + 28 + 36 + 39 + 42 + 43 = 356
4 and 9
5x+49 = 8x+13 49-13 = 8x-5x 36 = 3x x = 12
x = -13
The sum of 23 and 13 is 36