Выполните деление:
а) −5 : (−3);
б) −7 : 5;
в) 4 : (−18);
г) −8 : (−3);
д) $-\frac{5}{8} : \frac{3}{4}$;
е) $-\frac{9}{11} : (-\frac{3}{22})$;
ж) $\frac{4}{15} : (-\frac{8}{25})$;
з) $\frac{2}{3} : (-8)$;
и) $-5 : \frac{5}{7}$;
к) $3\frac{3}{7} : (-\frac{8}{21})$;
л) $-1\frac{2}{9} : (-5\frac{1}{3})$;
м) $-4\frac{2}{7} : 1\frac{19}{21}$;
н) $4,2 : (-2\frac{1}{3})$;
о) $-\frac{3}{5} : (-0,8)$;
п) $-5,2 : 1\frac{2}{5}$;
р) $3,2 : (-\frac{1}{2})$.
$-5 : (-3) = \frac{5}{3} = 1\frac{2}{3}$
$-7 : 5 = -\frac{7}{5} = 1\frac{2}{5}$
$4 : (-18) = -\frac{4}{18} = -\frac{2}{9}$
$-8 : (-3) = \frac{8}{3} = 2\frac{2}{3}$
$-\frac{5}{8} : \frac{3}{4} = -\frac{5}{8} * \frac{4}{3} = -\frac{5}{2} * \frac{1}{3} = -\frac{5}{6}$
$-\frac{9}{11} : (-\frac{3}{22}) = -\frac{9}{11} * (-\frac{22}{3}) = -\frac{3}{1} * (-\frac{2}{1}) = 6$
$\frac{4}{15} : (-\frac{8}{25}) = \frac{4}{15} * (-\frac{25}{8}) = \frac{1}{3} * (-\frac{5}{2}) = -\frac{5}{6}$
$\frac{2}{3} : (-8) = \frac{2}{3} * (-\frac{1}{8}) = \frac{1}{3} * (-\frac{1}{4}) = -\frac{1}{12}$
$-5 : \frac{5}{7} = -5 * \frac{7}{5} = -7$
$3\frac{3}{7} : (-\frac{8}{21}) = \frac{24}{7} * (-\frac{21}{8}) = \frac{3}{1} * (-\frac{3}{1}) = -9$
$-1\frac{2}{9} : (-5\frac{1}{3}) = -\frac{11}{9} * (-\frac{3}{16}) = -\frac{11}{3} * (-\frac{1}{16}) = \frac{11}{48}$
$-4\frac{2}{7} : 1\frac{19}{21} = -\frac{30}{7} * \frac{21}{40} = -\frac{3}{1} * \frac{3}{4} = -\frac{9}{4} = -2\frac{1}{4}$
$4,2 : (-2\frac{1}{3}) = \frac{21}{5} * (-\frac{3}{7}) = \frac{3}{5} * (-\frac{3}{1}) = -\frac{9}{5} = -1\frac{4}{5}$
$-\frac{3}{5} : (-0,8) = -\frac{3}{5} * (-\frac{5}{4}) = -\frac{3}{1} * (-\frac{1}{4}) = \frac{3}{4}$
$-5,2 : 1\frac{2}{5} = -\frac{26}{5} * \frac{5}{7} = -\frac{26}{1} * \frac{1}{7} = -\frac{26}{7} = -3\frac{5}{7}$
$3,2 : (-\frac{1}{2}) = \frac{16}{5} * (-\frac{2}{1}) = -\frac{32}{5} = -\frac{64}{10} = -6,4$
Пожауйста, оцените решение
