Решите уравнение: (x-3)/2=2x/7.

Ответ:

\[\frac{x - 3}{2} = \frac{2x}{7}\]

\[7 \cdot (x - 3) = 2 \cdot 2x\]

\[7x - 21 = 4x\]

\[7x - 4x = 21\]

\[3x = 21\]

\[x = 21\ :3\]

\[x = 7.\]

\[Ответ:x = 7.\]