\[\left( x - 2\frac{7}{8} \right) + 3\frac{5}{6} = 4\frac{2}{3}\]
\[x - 2\frac{7}{8} = 4\frac{4}{6} - 3\frac{5}{6}\]
\[x = \frac{5^{\backslash 4}}{6} + 2\frac{7^{\backslash 3}}{8} = 2\frac{20 + 21}{24} =\]
\[= 2\frac{41}{24}\]
\[x = 3\frac{17}{24}.\]