Предмет: Алгебра, автор: Avlezhinzaiab

Помогите плиззззззззззззззззз

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Ответы

Автор ответа: Аноним

0

8y+z = 0,7y; z = 0,7y-8y = -7,3y.
-7,3y/y = -7,3.
ответ : -7,3.

Avlezhinzaiab: Спасибо

Автор ответа: elena20092

0

(8y + z)/y = 0.7

разделим числитель на у, получим

8 + z/y = 0.7

выразим отсюда z/y

z/y = 0.7 - 8

z/y = -7,3

Значение выражения z/y равно -7,3

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