Ответ:
а) \(1\frac{1}{3}-x=2\frac{5}{6}\).
\[x=1\frac{1}{3}-2\frac{5}{6}=\frac{4}{3}-\frac{17}{6}=\frac{8}{6}-\frac{17}{6}=-\frac{9}{6}=-1\frac{1}{2}.\]
б) \(-2\frac{2}{7}+x=-4\frac{1}{14}\).
\[x=-4\frac{1}{14}+2\frac{2}{7}=-\frac{57}{14}+\frac{32}{14}=-\frac{25}{14}=-1\frac{11}{14}.\]
Ответ: а) \(x=-1\frac{1}{2}\); б) \(x=-1\frac{11}{14}\).
