Heya.
[tex]5\frac{2}{3} + 2 \frac{3}{4} = \frac{17}{3} + \frac{11}{4} = \frac{68}{12} + \frac{33}{12} = \frac{101}{12} = 8 \frac{5}{12}\\\\6\frac{1}{2} - 2 \frac{7}{9} = \frac{13}{2} - \frac{25}{9} = \frac{117}{18} - \frac{50}{18} = \frac{60}{18} = 3\frac{1}{3}\\\\1\frac{1}{5} * 2\frac{2}{9} = \frac{6}{5} * \frac{20}{9} = \frac{24}{9} = 2\frac{2}{3}\\\\\frac{2}{5} : \frac{8}{1} = \frac{2}{5} * \frac{1}{8} = \frac{1}{20}[/tex]
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