Подобрать значения переменных и решить . для ремонта двух книг косте нужно 3 ч.сколько времени нужно для ремонта 4 книг? 6книг? c книг?
1-й вариант: обозначим за х одну книгу, дальше найдем сколько времени косте нужно на 1 книгу из уравнения: 2х=3, значит на одну книгу косте нужно 1,5 часа. отсюда для 4-х книг: 4*1,5=6, а для шести: 6*1,5=9, а для ремонта с книг: с*1,5
2-й вариант: обозначим за х две книги,значит для 4-х книг 2x а отсюда для 4-х книг это 6 часов, для 6-ти книг это 3х, соответственно при х=3 время для 6-ти книг 9 часов
Пошаговое объяснение:
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