3 + 11 + 11 + 11 + 12 + 13 + 15 + 15 + 16 + 17 + 19 = 143
15!! Not 16, that person was wrong!!
496
the answer would be 16 because 1 more than 15 is 16
9/16 + 15/16 = 3/2 or 11/2
x+15=16x=16-15x=1
it would be 21. I think the answer is -22. Because -16 + -21= -37 + 15= -22
71
75 / 15 + 4 + 7 = 16
15/16 is.
5/16 + 7/15 = 187/240
15