Автор - dashkaazeeva

а)7 4/9-3 2/9+4 5/9
б)4 7/15+8 8/15-6 14/15
в)(4 21/23+6 8/23)- 3 21/23

Ответ

Автор - Зубанева
а) 7 49 - 3 29 + 4 59 =8 79
б) 4 715 + 8 815 - 6 1415 = 6 115
в) (4 2123 + 6 823) - 3 2123 = 10 2923 - 3 2123 = 7 823

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