Ответ:

Пошаговое объяснение:

1 ) 11 2/7 + 4 3/7 = 15 2/7 ;

2) 26 7/19 - 13 4/19 = 13 3/19 ;

3) 44 2/9 - 8 5/9 - 7/9 = 43 11/9 - 8 5/9 - 7/9 = 35 6/9 - 7/9 = 34 15/9 - 7/9 = 34 8/9 ;

4) 5 7/10 + 3 17/10 + 1 3/10 = 5 7/10 + 3 20/10 = 5 7/10 + 5 = 10 7/10 ;

5) 3 17/100 - 2 13/100 - 1 = 1 4/100 - 1 = 4/100 = 1/25 ;

6) 8 - 4 31/100 - 2 57/100 = 7 100/100 - (4 31/100 +2 57/100 ) = 7 100/100 - 6 88/100 =

= 1 12/100 = 1 3/25 .