Предмет: Математика, автор: Аноним

Упрости выражения: а) 5,9c-3(2c-5)-2,1c б) -15b-7(3b+7)-28b в) 60c+0,7(8c-2)-9,8c

Ответы

Автор ответа: кляча

1

а) = 5,9с - 6с + 15 - 2,1 = 12,9 - 0,1с
б) = - 15b - 21b - 49 - 16b = -52b - 49
в) 60с + 5,6с - 1,4 - 9,8с = 55,8с - 1,4

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