1) = =
2) tex]\frac{7}{8} - \frac{3}{8}" alt="\frac{5}{9}
2) tex]\frac{7}{8} - \frac{3}{8}" align="absmiddle" class="latex-formula"> = =
3) [tex]\frac{15}{19} - \frac{6}{19}" alt="\frac{4}{8}
3) [tex]\frac{15}{19} - \frac{6}{19}" align="absmiddle" class="latex-formula"> = =
4) [tex]\frac{5}{16} + \frac{1}{16}" alt="\frac{9}{19}
4) [tex]\frac{5}{16} + \frac{1}{16}" align="absmiddle" class="latex-formula"> = = )
5) [tex]\frac{3}{14} + \frac{11}{14}" alt="\frac{6}{16}
5) [tex]\frac{3}{14} + \frac{11}{14}" align="absmiddle" class="latex-formula"> = = )
5) [tex]\frac{11}{21} + \frac{11}{21}" alt="\frac{14}{14} = 1
5) [tex]\frac{11}{21} + \frac{11}{21}" align="absmiddle" class="latex-formula"> = = ) [tex]\frac{15}{21}