-15 19 is not a question so it doesn't have an answer
The LCM of 15 and 19 is 285lcm(19, 15) = 285.
17/19 - 15/19 = 2/19
15 + 19 = 34
19/15=1.2667
15/19
41 19 15 7 41 19 15 7 41 19 15 7 41 19 15 7 41-19-15-7 (104 points)
(15 + 19)/2 = 17
15
2/3 + 3/5 =10/15 + 9/15= 19/15(19/15) / 2 = 19/3019/30
That would be -19
0.0526
gcf(15, 9, 19) = 1.