[tex] \frac{15}{12} - \frac{12}{10} = \frac{3}{2} \\ \\ \frac{17}{9} - \frac{10}{9} = \frac{7}{9} \\ \\ \frac{80}{100} - \frac{50}{100} = \frac{30}{100} \\ \\ \frac{14}{8} - \frac{10}{8} = \frac{4}{8} \\ \\ \frac{5}{7} - \frac{4}{7} = \frac{1}{7} \\ \\ \frac{11}{4} - \frac{9}{4} = \frac{2}{4} \\ \\ \frac{10}{10} - \frac{2}{10} - \frac{4}{10} = \frac{4}{10} \\ \\ \frac{100}{100} - \frac{12}{100} - \frac{16}{100} - \frac{32}{100} = \frac{28}{100} [/tex]
