\(\frac{3}{8} + \frac{1}{4}\)

\(\frac{7}{8} + \frac{1}{10}\)

\(\frac{2}{7} + \frac{3}{10}\)

\(\frac{5}{6} + \frac{1}{8}\)

\(\frac{5}{12} + \frac{5}{18}\)

\(\frac{7}{16} - \frac{1}{4}\)

\(\frac{5}{6} - \frac{3}{8}\)

\(\frac{3}{4} - \frac{1}{2}\)

\(\frac{5}{12} - \frac{1}{4}\)

\(\frac{1}{3} + \frac{4}{18}\)

\(\frac{3}{5} + \frac{1}{3}\)

\(\frac{3}{10} + \frac{1}{6}\)

\(\frac{1}{2} + \frac{4}{9}\)

\(\frac{1}{2} - \frac{3}{8}\)

\(\frac{5}{7} - \frac{2}{3}\)

\(\frac{4}{9} - \frac{1}{6}\)

\(\frac{11}{12} - \frac{7}{15}\)

\(\frac{9}{10} - \blacksquare=\frac{1}{5}\)

\(\frac{5}{12} + \blacksquare=\frac{1}{2}\)