в) \(\frac{11}{12} - x = \frac{1}{18}\).

в) \(\frac{11}{12} - x = \frac{1}{18}\)

\(x = \frac{11}{12} - \frac{1}{18}\)

\(x = \frac{11 \cdot 3}{12 \cdot 3} - \frac{1 \cdot 2}{18 \cdot 2}\)

\(x = \frac{33}{36} - \frac{2}{36}\)

\(x = \frac{33-2}{36}\)

\(x = \frac{31}{36}\)

Ответ: \(x = \frac{31}{36}\)