[tex] \frac{9}{x} + \frac{15}{3} \times \frac{11}{21} = \frac{464}{105} \\ \\ \frac{9}{x} + 5 \times \frac{11}{21} = \frac{464}{105} \\ \\ \frac{9}{x} + \frac{55}{21} = \frac{464}{105} \\ \\ \frac{9}{x} = \frac{464}{105} - \frac{55}{21} = \frac{9}{5} \\ \\ 9 = \frac{9}{5}x = \frac{9x}{5} \\ \\ 9 \times 5 = 9x \\ \\ 45 = 9x \\ \\ \frac{45}{9} = x \\ \\ 5 = x \\ \\ x = 5 [/tex]