2 11/15 1 1/19 = (30/15 + 11/15) (19/19 + 1/19)
= 41/15 * 20/19
= 820/285
= 164/57

1 1/19 3/10 = (19/19 + 1/19) 3/10
= 20/19 * 3/10
= 60/190
= 6/19

1 1/6 1 1/19 = (6/6 + 1/6) (19/19 + 1/19)
= 7/6 * 20/19
= 140/114
= 70/57

Finally, the expression becomes:
164/57 - 6/19 - 70/57 = 164/57 - 6/19 - 70/57
= (16419)/(5719) - 63/(193) - 701/(571)
= 3116/1083 - 18/57 - 70/57
= (3116 - 18 - 70)/1083
= 3028/1083

So, the simplified expression is 3028/1083.