9 У-14X + 3 У 2 X- 7 4 5 2

9) $$\frac{2}{7}$$x - $$\frac{4}{9}$$y - $$\frac{5}{14}$$x + $$\frac{2}{3}$$y = $$\frac{2}{7}$$x - $$\frac{5}{14}$$x - $$\frac{4}{9}$$y + $$\frac{2}{3}$$y = $$(\frac{2}{7}$$ - $$\frac{5}{14}$$)x + (-$$\frac{4}{9}$$ + $$\frac{2}{3}$$)y = $$(\frac{2 * 2}{7 * 2}$$ - $$\frac{5}{14}$$)x + (-$$\frac{4}{9}$$ + $$\frac{2 * 3}{3 * 3}$$)y = $$(\frac{4}{14}$$ - $$\frac{5}{14}$$)x + (-$$\frac{4}{9}$$ + $$\frac{6}{9}$$)y = -$$\frac{1}{14}$$x + $$\frac{2}{9}$$y

Ответ: -$$\frac{1}{14}$$x+$$\frac{2}{9}$$y