[tex]ex.8[/tex]
[tex]b)2 \frac{26}{27} \div \frac{4}{9} \div \frac{5}{3} [/tex]
[tex] \frac{80}{27} \times \frac{9}{4} \times \frac{3}{5} [/tex]
[tex] \frac{20}{3} \times \frac{3}{5} [/tex]
[tex]4[/tex]
[tex]a)2 \frac{22}{25} \div \frac{9}{4} \div \frac{4}{5} [/tex]
[tex] \frac{72}{25} \times \frac{4}{9} \times \frac{5}{4} [/tex]
[tex] \frac{8}{5} [/tex]
[tex]c)1 \frac{11}{49} \div \frac{16}{21} \div \frac{3}{4} [/tex]
[tex] \frac{60}{49} \times \frac{21}{16} \times \frac{4}{3} [/tex]
[tex] \frac{20}{7} \times \frac{3}{4} [/tex]
[tex] \frac{5}{7} \times 3[/tex]
[tex] \frac{15}{7} [/tex]
[tex]d)2 \frac{26}{27} \div \frac{20}{3} \div \frac{8}{9} [/tex]
[tex] \frac{80}{27} \times \frac{3}{20} \times \frac{9}{8} [/tex]
[tex] \frac{4}{9} \times \frac{9}{8} [/tex]
[tex] \frac{1}{2} [/tex]
[tex]e)3 \frac{11}{15} \div \frac{21}{10} \div \frac{4}{3} [/tex]
[tex] \frac{56}{15} \times \frac{10}{21} \times \frac{3}{4} [/tex]
[tex] \frac{14}{5} \times \frac{10}{21} [/tex]
[tex]2 \times \frac{2}{3} [/tex]
[tex] \frac{4}{3} [/tex]
[tex]ex.12[/tex]
[tex]a)1 \frac{1}{4} \div \frac{3}{2} - \frac{7}{12} [/tex]
[tex] \frac{5}{4} \times \frac{2}{3} - \frac{7}{12} [/tex]
[tex] \frac{5}{2} \times \frac{1}{3} - \frac{7}{12} [/tex]
[tex] \frac{5}{6} - \frac{7}{12} [/tex]
[tex] \frac{1}{4} [/tex]
[tex]b) \frac{8}{3} \div 3 \frac{1}{5} - \frac{1}{9} [/tex]
[tex] \frac{8}{3 } \times \frac{1}{2} \times \frac{1}{5} - \frac{1}{9} [/tex]
[tex] \frac{8}{45} - \frac{1}{9} [/tex]
[tex] \frac{1}{15} [/tex]
[tex]c) \frac{3}{10} + 2 \frac{2}{9} \div \frac{8}{3} [/tex]
[tex] \frac{3}{10} + \frac{20}{9} \times \frac{3}{8} [/tex]
[tex] \frac{3}{10} + \frac{5}{3} \times \frac{1}{2} [/tex]
[tex] \frac{3}{10} + \frac{5}{6} [/tex]
[tex] \frac{17}{15} [/tex]
[tex]d) \frac{11}{6} - \frac{4}{45} \div 2 \frac{2}{3} [/tex]
[tex] \frac{11}{6} - \frac{4}{45} \times \frac{1}{3} [/tex]
[tex] \frac{11}{6} - \frac{4}{135} [/tex]
[tex] \frac{487}{270} [/tex]
[tex]e)1 \frac{13}{50} \div \frac{9}{2} + \frac{13}{15} [/tex]
[tex] \frac{63}{50} \times \frac{2}{9} + \frac{13}{15} [/tex]
[tex] \frac{7}{25} + \frac{13}{15} [/tex]
[tex] \frac{86}{75} [/tex]
[tex]f)2 \frac{9}{20} \div \frac{14}{5} + \frac{5}{18} [/tex]
[tex] \frac{49}{20} \times \frac{5}{14} + \frac{5}{18} [/tex]
[tex] \frac{7}{4} \times \frac{1}{2} + \frac{5}{18} [/tex]
[tex] \frac{7}{8} + \frac{5}{18} [/tex]
[tex] \frac{83}{72} [/tex]
