1) $$x + \frac{x}{9} = -\frac{10}{3}$$
$$\frac{9x + x}{9} = -\frac{10}{3}$$
$$\frac{10x}{9} = -\frac{10}{3}$$
$$x = -\frac{10}{3} \cdot \frac{9}{10}$$
$$x = -3$$
Ответ: -3
2) $$x - \frac{x}{7} = 6$$
$$\frac{7x - x}{7} = 6$$
$$\frac{6x}{7} = 6$$
$$x = 6 \cdot \frac{7}{6}$$
$$x = 7$$
Ответ: 7
3) $$x + \frac{x}{5} = -\frac{12}{5}$$
$$\frac{5x + x}{5} = -\frac{12}{5}$$
$$\frac{6x}{5} = -\frac{12}{5}$$
$$x = -\frac{12}{5} \cdot \frac{5}{6}$$
$$x = -2$$
Ответ: -2
4) $$x - \frac{x}{12} = -\frac{11}{3}$$
$$\frac{12x - x}{12} = -\frac{11}{3}$$
$$\frac{11x}{12} = -\frac{11}{3}$$
$$x = -\frac{11}{3} \cdot \frac{12}{11}$$
$$x = -4$$
Ответ: -4
5) $$x + \frac{x}{2} = -9$$
$$\frac{2x + x}{2} = -9$$
$$\frac{3x}{2} = -9$$
$$x = -9 \cdot \frac{2}{3}$$
$$x = -6$$
Ответ: -6
6) $$x - \frac{x}{11} = \frac{50}{11}$$
$$\frac{11x - x}{11} = \frac{50}{11}$$
$$\frac{10x}{11} = \frac{50}{11}$$
$$x = \frac{50}{11} \cdot \frac{11}{10}$$
$$x = 5$$
Ответ: 5