9.2.1. 5 · (x + 4) = −9

Question

Разделим обе части на 5: x + 4 = \(-\frac{9}{5}\).

Вычтем 4: x = -\(\frac{9}{5}\) - 4 = -\(\frac{9}{5}\) - \(\frac{20}{5}\) = -\(\frac{29}{5}\).

Ответ: \(x = -\frac{29}{5}\).

Accepted Answer

Разделим обе части на 5: x + 4 = \(-\frac{9}{5}\).

Вычтем 4: x = -\(\frac{9}{5}\) - 4 = -\(\frac{9}{5}\) - \(\frac{20}{5}\) = -\(\frac{29}{5}\).

Ответ: \(x = -\frac{29}{5}\).