Решите пропорции!! Ж и з

Ж) [latex] \frac{2}{x} = \frac{y}6} \\ \\ \frac{y}6} = \frac{2}{x} \\ \\ x = \frac{12}{y} \\ \\ y = \frac{12}{x} [/latex] З)  [latex] \frac{3}{x} = \frac{x}{12} \\ \\ x = \frac{36}{x} \\ \\ \frac{x^2}{x} - \frac{36}{x} = \frac{x^2-36}{x} = 0 \\ \\ x_{1} = \sqrt{36} \\ \\ x_{2} = - \sqrt{36} \\ \\ x_{1} = 6 \\ x_{2} = -6 [/latex]