3 1/7+94/5=
6 11/7-141/5=
12 8/2:5 4/1=
3 26/71*2 4/9=​

Ответ:

Пошаговое объяснение:

1)

3 1/7 + 9 4/5 = 3 5/35 + 9 28/35 = 12 33/35

2)

6 11/7 - 141/5 = 7 4/7 - 28 1/5 = 7 20/35 - 28 7/35 =

=  7 20/35 - 27 42/35 =  - 20 22/35

3)

12 8/2 : 5 4/1 = 32/2 : 9/1 =  16 : 9 = 1 7/9

4)

3 26/71 * 2 4/9 = 239/71 * 22/9 = 5258/639 = 8 146/639