Heya.
[tex]\left(-1\frac{7}{9}\right)\cdot 3 =(- \frac{16}{9} )*\frac{3}{1} = \frac{-16}{3} = 5\frac{1}{3} \\\\\left(-2\frac{3}{4}\right)\cdot \left(-1\frac{2}{3}\right)\ =\ (-\frac{11}{4} )*(-\frac{5}{3} ) = \frac{55}{12} = 4\frac{7}{12}\\\\\left(-1\frac{1}{14}\right)\cdot 2\frac{9}{20} = -\frac{15}{14} * \frac{49}{20} = \frac{-21}{8} = -2\frac{5}{8} \\\\(-1\frac{7}{15} ): (-6\frac{3}{5} ) = (-\frac{22}{15} ) * (-\frac{5}{33} ) = \frac{110}{495} = \frac{2}{9}[/tex]
Mam nadzieję że pomogłęm! ~EnglishElite
