[tex] \frac{7}{10} - \frac{1}{2} = \frac{7}{10} - \frac{5}{10} = \frac{2}{10} = \frac{1}{5} [/tex]
[tex] \frac{3}{4} - \frac{3}{8} = \frac{6}{8} - \frac{3}{8} = \frac{3}{8} [/tex]
[tex] \frac{2}{3} - \frac{7}{27} = \frac{18}{27} - \frac{7}{27} = \frac{11}{27} [/tex]
[tex] \frac{37}{44 } - \frac{1}{2} = \frac{37}{44} - \frac{22}{44} = \frac{15}{44} [/tex]
