Предмет: Математика, автор: Jenn2552

Привет, мне нужна помощь с домашней работой. Мое домашнее задание во вложениях.

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Автор ответа: ehktvadasha

Вычисли разность она равна -2(2 член вычитаем из 1).далее по формуле а9=23,5+8*(-2)=7,5

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