Question

0,(12)
--------+3,(72)
0,(4)​

Answer 1

Ответ:

4

Пошаговое объяснение:

0,(12) = (12-0)/99 = 12/99 = 4/33

0,(4) = (4-0)/9 = 4/9

3,(72) = 3 (72-0)/99 = 3 72/99 = 3 8/11

0,(12)/0,(4) + 3,(72) =

4/33 : 4/9 + 3 8/11 = 4/33 * 9/4 + 3 8/11 =

1/11 * 3/1 + 3 8/11 = 3/11 + 3 8/11 = 3 11/11 = 4