\begin{array}{r}\frac{7}{8} \\ +\frac{1}{2} \\ \end{array} \begin{array}{r}

8 \frac{1}{3} \\

-2 \frac{2}{5} \\

\hline

\end{array} \begin{array}{r}\frac{15}{16} \\ -\frac{3}{16} \\ \end{array} \begin{array}{r}\frac{2}{5} \\ +6\frac{1}{4} \\ \end{array}