12 2/13 - (8 2/13 + 1 5/13)=? 28 2/21 - (14 17/21 + 11 8/21)=? 9 13/19 + (8 18/19 - 3 15/19)=? 10 4/21 - (4 10/21 + 3 19/21)=? ______________________________________________________________________ х-1 5/7= 2 1/7 (12 5/13 + y)...

12 2/13 - (8 2/13 + 1 5/13)=? 28 2/21 - (14 17/21 + 11 8/21)=? 9 13/19 + (8 18/19 - 3 15/19)=? 10 4/21 - (4 10/21 + 3 19/21)=? ______________________________________________________________________ х-1 5/7= 2 1/7 (12 5/13 + y)- 2 9/131 = 7/13 ____________________________________________________________________ При делении числа А на 12 получилось 10 5/12. Найди число А. ____________________________________________________________________ ДАю 26!