Lots of sums. 39 plus 28, for example.
9 + 10 + 29 - 10 = 38
20
29 + 9 = 38
67
if y = 29 then 12+y = 41
3 + 5x = 38 -> 5x = 35 -> x = 7
9
38 * 29 = 1,102
(51 / 38) - (29 / 38) = (51 - 29) / 28 = 22 / 38 = 11/ 19 = 0.578947368421052631... (repeating)
244
The only fraction that's the same size as 38 is 38/1. Anything else you do to it will change its value.
57 + 57 + 38 + 38 = 190