[tex]1- \frac{4}{7} = \frac{7-4}{7} = \frac{3}{7} [/tex]
[tex]1- \frac{7}{8} = \frac{8-7}{8} = \frac{1}{8} [/tex]
[tex]1- \frac{2}{9} = \frac{9-2}{9} = \frac{7}{9} [/tex]
[tex]1- \frac{3}{4} = \frac{4-3}{4} = \frac{1}{4} [/tex]
[tex]3- \frac{1}{2} = \frac{(3*2)-1}{2} = \frac{5}{2} [/tex]
[tex]2- \frac{3}{4} = \frac{5}{4} [/tex]
[tex]1- \frac{4}{15} = \frac{11}{15} [/tex]
[tex]1- \frac{3}{7} = \frac{4}{3} [/tex]
