Предмет: Математика, автор: ната1197

помогите пож.решить А) 1 4/9 × 9= ; Б) ( 5/14+ 1 1/7)=; В) 4 3/5×4/9+4/9×4 2/5=.​

Ответы

Автор ответа: Pystay
3

Ответ:

а)=14;

б)37

___

14

в) 68

___

9

Автор ответа: alimusaev77
1

Пошаговое объяснение:

А) 1 4/9×9

1) 1 4/9= 13/9

2) 13/9 × 9( сокращаем знаменатель и 9)= 13

Б) 5/14 + 11/7

1) приводим в общий заменатель

11/7=22/14

2) 5/14 + 22/14= 27/14

В)

1)4 3/5=23/5; 4 2/5=22/5 ( превращаем в неправильную дробь)

2)23/5 × 4/9= 92/45

3)22/5 × 4/9= 88/45

4)92/45 + 88/45= 180/45 (сокращаем)= 4

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