Odpowiedź :
Odpowiedź:
[tex]8\frac{2}{5} -4\frac{3}{6} =\frac{42}{5} -\frac{27}{6} =\frac{252}{30} -\frac{135}{30} =\frac{117}{30}=\frac{39}{10} = 3\frac{9}{10} \\[/tex]
[tex]2\frac{1}{3} *3\frac{3}{5} =\frac{7}{3} *\frac{18}{5} = \frac{7}{1} *\frac{6}{5} =\frac{42}{5} = 8\frac{2}{5} \\[/tex]
[tex]5\frac{1}{4} :\frac{7}{8} =\frac{21}{4} : \frac{7}{8} = \frac{21}{4} * \frac{8}{7} = \frac{3}{1} * \frac{2}{1} = 6[/tex]
Szczegółowe wyjaśnienie: