Ответ:

[tex]1) - 6x = \frac{1}{3} \\ x = - \frac{1}{18} \\ 2)0.1x = - 2.75 \\ x = - 27.5 \\ 3) \frac{1}{3} x = 12 \\ x =36 \\ 4) \frac{5}{7} x = \frac{10}{49} \\ x = \frac{10 \times 7}{49 \times 5} \\ x = \frac{2}{7} [/tex]