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За книгу , альбом і олівець заплатили 13 000 карбованців. Книжка в 2 рази дорожча за альбом, а олівець на 3000 крб. дешевший від альбома. Скільки коштує альбом?
Ответы 1
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x... столько руб. стоит альбом
2х... столько руб. стоит книжка
х-3000... столько руб. стоит карандаш
По условию: х+2х+х-3000=13000 (руб.)
4x=16000
x=4000
Ответ: альбом стоит 4000 руб.
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Автор:
adrian774 - 5 лет назад
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