помиогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ответ:

13,3/5

Пошаговое объяснение:

1)12,4/15-2,4/5=11,19/15-2,12/15=9,7/15

2)12,4/15-2,12/15=9,7/15

3)12,4/15+9,7/15=21,11/15

4)35,1/3-21,11/15=35,5/15-21,11/15=34,20/15-21,11/15=13,9/15=13,3/5