Найдите значения выражения а) 7- 4 5/9б) 4 3/10+1 5/12в) 6 15/12+2 9/14г) 5 1/6 - 3 3/4

А) 7 - 4 5/9 = 6 9/9 - 4 5/9 = 2 4/9
Б) 4 3/10 + 1 5/12 = 4 18/60 + 1 25/60 = 5 43/60
В) 6 15/12 + 2 9/14 = 6 105/84 + 2 54/84 = 8 159/84 = 9 75/84 = 9 25/28
Г) 5 1/6 - 3 3/4 = 4 6/6 - 3 3/4 = 4 12/12 - 3 9/12 = 1 3/12 = 1 1/4