Предмет: Математика, автор: ора8

бабушка испекла пирожков. за завтраком сьели 4/7 пирожков, в обед доели 9 пирожков. сколько пирожков напекла бабуля

Ответы

Автор ответа: mania2209

7/7 - это всего пирожков
7/7 - 4/7 = 3/7 - это то что съели в обед
9 : 3 = 3 пирожка это 1/7
3 × 7 = 21
Всего бабушка испекла 21 пирожок

matilda17562: Во втором действии 9:3, а не на 3/7. Исправьте, пожалуйста. В третьем - 3*7 = 21.

mania2209: Спасибо за поправку

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