Question

Va rog vreau 8 și 12 și 13 dau coroana

Answer 1

$ex.8$

$b)2 \frac{26}{27} \div \frac{4}{9} \div \frac{5}{3}$

$\frac{80}{27} \times \frac{9}{4} \times \frac{3}{5}$

$\frac{20}{3} \times \frac{3}{5}$

$4$

$a)2 \frac{22}{25} \div \frac{9}{4} \div \frac{4}{5}$

$\frac{72}{25} \times \frac{4}{9} \times \frac{5}{4}$

$\frac{8}{5}$

$c)1 \frac{11}{49} \div \frac{16}{21} \div \frac{3}{4}$

$\frac{60}{49} \times \frac{21}{16} \times \frac{4}{3}$

$\frac{20}{7} \times \frac{3}{4}$

$\frac{5}{7} \times 3$

$\frac{15}{7}$

$d)2 \frac{26}{27} \div \frac{20}{3} \div \frac{8}{9}$

$\frac{80}{27} \times \frac{3}{20} \times \frac{9}{8}$

$\frac{4}{9} \times \frac{9}{8}$

$\frac{1}{2}$

$e)3 \frac{11}{15} \div \frac{21}{10} \div \frac{4}{3}$

$\frac{56}{15} \times \frac{10}{21} \times \frac{3}{4}$

$\frac{14}{5} \times \frac{10}{21}$

$2 \times \frac{2}{3}$

$\frac{4}{3}$

$ex.12$

$a)1 \frac{1}{4} \div \frac{3}{2} - \frac{7}{12}$

$\frac{5}{4} \times \frac{2}{3} - \frac{7}{12}$

$\frac{5}{2} \times \frac{1}{3} - \frac{7}{12}$

$\frac{5}{6} - \frac{7}{12}$

$\frac{1}{4}$

$b) \frac{8}{3} \div 3 \frac{1}{5} - \frac{1}{9}$

$\frac{8}{3 } \times \frac{1}{2} \times \frac{1}{5} - \frac{1}{9}$

$\frac{8}{45} - \frac{1}{9}$

$\frac{1}{15}$

$c) \frac{3}{10} + 2 \frac{2}{9} \div \frac{8}{3}$

$\frac{3}{10} + \frac{20}{9} \times \frac{3}{8}$

$\frac{3}{10} + \frac{5}{3} \times \frac{1}{2}$

$\frac{3}{10} + \frac{5}{6}$

$\frac{17}{15}$

$d) \frac{11}{6} - \frac{4}{45} \div 2 \frac{2}{3}$

$\frac{11}{6} - \frac{4}{45} \times \frac{1}{3}$

$\frac{11}{6} - \frac{4}{135}$

$\frac{487}{270}$

$e)1 \frac{13}{50} \div \frac{9}{2} + \frac{13}{15}$

$\frac{63}{50} \times \frac{2}{9} + \frac{13}{15}$

$\frac{7}{25} + \frac{13}{15}$

$\frac{86}{75}$

$f)2 \frac{9}{20} \div \frac{14}{5} + \frac{5}{18}$

$\frac{49}{20} \times \frac{5}{14} + \frac{5}{18}$

$\frac{7}{4} \times \frac{1}{2} + \frac{5}{18}$

$\frac{7}{8} + \frac{5}{18}$

$\frac{83}{72}$