1 целая 2/5•(1 целая1/14-5/7

Question

1 целая 2/5•(1 целая1/14-5/7

Answer 1

7/5*(15/14-5/7)=5/10=1/2
15/14-5/7=15/14-10/14=5/14
7/5*5/14=5/10=1/2
Ответ: 1/2