Предмет: Математика, автор: Аноним

у двох групах 45 дитини.Скільки дітей у кожній групі ,якщо в першій групі дітей у чотири раза більше ніж у другій

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Автор ответа: 26

Пусть в другой группе -х детей,тогда в первой группе-4х детей. Всего- 45 детей.
Составим и решим уравнение:
х+4х=45
5х=45
х=9
Тогда в первой группе-9 детей, а во второй 4х=4×9=36.

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