Выполните действие. 6/15+11/12=? 7/24-5/18=? 4/35+1/28=? 11/63-5/42=? Найдите значение выражений 1-5/8 1+2 5/8 8-5/12

6/15 + 11/12 = 24/60 + 55/60 = 79/60;

7/24 - 5/18 = 21/72 - 20/72 = 1/72;

4/35 + 1/28 = 16/140 - 5/140 = 11/140;

11/63 - 5/42 = 22/126 - 15/126 = 7/126 = 1/18;

1 - 5/8 = 8/8 - 5/8 = 3/8;

1 + 2 5/8 = 1 + 21/8 = 8/8 + 21/8 = 29/8 = 3 5/8;

8 - 5/12 = 96/12 -5/12 = 91/12 = 7 7/12;

4 - 1 2/3 = 4 - 5/3 = 12/3 - 5/3 = 7/3 = 2 1/3.