Предмет: Математика, автор: VeRiL13

A) (-2y – 5)(0,3y + 2,7) = 0​

Ответы

Автор ответа: сок111213
1

Приравняем каждую скобку к нулю

- 2y - 5 = 0 \\ - 2y = 5 \\ y = \frac{5}{ - 2} \\ y = - 2.5

0.3y + 2.7 = 0 \\ 0.3y = - 2.7 \\ y = \frac{ - 2.7}{0.3} \\ y = - \frac{27}{3} \\ y = - 9

ответ : -9 ; -2.5

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