Question

Va rog mult ! Mulțumesc!

Answer 1

$\frac{4}{x} = \frac{ \frac{5}{3} \div \frac{12}{5} }{x - 5} \\ 4(x - 5) = \frac{25}{36} \times x \\ x - 5 = \frac{25}{144} \times x \\ \frac{119}{144} \times x = 5 \\ x =4.1319444444$