10 4/15 + 9 11/15 - 8 1/30 = б) 19 1/17 -8 9/17 - 3 15:17 = в ) ( 6 7/12 + 8 5/12 ) - 7...

Question

10 4/15 + 9 11/15 - 8 1/30 = б) 19 1/17 -8 9/17 - 3 15:17 = в ) ( 6 7/12 + 8 5/12 ) - 7 16/21 - 4 6/21 =

Answer 1

1.11 29/30
2.6 11/17
3.11 11/21