Question

найдите значение выражений 7/5+4/9-3/10

Answer 1

7/5 + 4/9 = 63+20/45 = 83/45 = 1 38/45

1 38/45 - 3/10 = 76-27/90 = 49/90

7/5 + 4/9 - 3/10 = 49/90