104 minus 13 is 91.
137 minus 104 is 33.
160 - 104 = 56
104 - 26 _____ 078
600 - 104 = 496
Whenever you minus a negative (number), you add. So it would be 104 - (-13), or 104 + 13, which is 117
54
90
400 - 125 = 275
Use a calculator
280 - 5 = 275
56 minus -48 is 104.