Предмет: Математика, автор: Аноним

4. Установи послідовність виконання дій у виразі та обчисли його значення. 20 000-(306-12-1389)​

Ответы

Автор ответа: katarina54
0

Ответ:

сначала действие в скобках, потом за скобками

Пошаговое объяснение:

306-12=294

294-1389= -1095

20 000+1095=21 095 - минус на минус даёт плюс

Автор ответа: cvb115
0

Ответ:

20 000-(306-12-1389)​=21 095

1) Раскроем скобки, так как перед скобками стоит знак минус меняем знак на противоположный:

20 000-(306-12-1389)​=20 000-306+12+1389

2) теперь по очереди выполним действия:

20 000-306=19 694

16 694+12=19 706

1389+19 706=21 095

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