Решение:
\[ x = \frac{3}{4} - \frac{1}{2} \]
\[ x = \frac{3}{4} - \frac{1 \times 2}{2 \times 2} \]
\[ x = \frac{3}{4} - \frac{2}{4} \]
\[ x = \frac{3-2}{4} = \frac{1}{4} \]
Ответ: x = \(\frac{1}{4}\)