Предмет: Математика, автор: Элька1020

Найдите сумму всех чисел кратных 9 удовлетворяющих неравенству 275<х<324

Ответы

Автор ответа: Accord999

х = от 276 до 323.
Чисел, кратных 9 в этом промежутке 5: 279, 288, 297, 306, 315.
279 + 288 + 297 + 306 + 315 = 1485.
Ответ: сумма чисел, кратных 9 и удовлетворяющих неравенству равна 1485.

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