[tex]9 - 4 \frac{5}{9} = 4 \frac{4}{9} [/tex]
[tex]4 \frac{4}{5} - 1.3 = \frac{24}{5} - \frac{13}{10} \\ = \frac{48}{10} - \frac{13}{10} = \frac{35}{10} = 3 \frac{1}{2} [/tex]
[tex]5.2 \times 1 \frac{2}{5} = \frac{52}{10} \times \frac{7}{5} = \frac{364}{50} = 7 \frac{14}{50} = 7 \frac{7}{25} [/tex]
[tex]3 \frac{3}{5} \div 2 = \frac{18}{5} \times \frac{1}{2} = \frac{9}{5} = 1 \frac{4}{5} [/tex]
[tex] \frac{2}{3} + 2 \frac{3}{5} + \frac{5}{6} = \frac{2}{3} + \frac{13}{5} + \frac{5}{6} = \frac{20 + 78 + 25}{30} = \frac{123}{30} = 4 \frac{3}{30} = 4 \frac{1}{10} [/tex]
[tex]5 \frac{2}{4} \div 3 \frac{1}{2} = \frac{22}{4} \div \frac{7}{2} = \frac{22}{4} \times \frac{2}{7} = \frac{11}{7} = 1 \frac{4}{7} [/tex]
semoga membantuu
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