[tex] \huge1 = \frac{4}{6} + \frac{2}{9} \\ \\ \huge1 = \frac{7}{10} + \frac{3}{10} [/tex]
[tex] \huge1 - \frac{4}{7} = \frac{3}{7} \\ \\ \huge 1 - \frac{9} {11} = \frac{2}{11} [/tex]
[tex] \huge1 = \frac{7}{15} + \frac{8}{15} \\ \\ \huge1 = \frac{3}{3} + 0[/tex]
[tex] \huge \frac{5}{9} + \frac{3}{9} = \frac{8}{9} \\ \\ \huge\frac{5}{9} - \frac{1}{9} = \frac{4}{9} [/tex]
[tex] \huge \frac{5}{8} - \frac{3}{8} = \frac{2}{8} \\ \\ \huge \frac{4}{8} + \frac{3}{8} = \frac{7}{8} [/tex]
