[tex]zad.a\\\\4\frac{2}{3} \cdot \frac{9}{10}\cdot \frac{3}{14} =\frac{14}{3} \cdot \frac{9}{10}\cdot \frac{3}{14} =\frac{14}{3} \cdot \frac{3}{14} \cdot \frac{9}{10}= \cdot \frac{9}{10} = 0,9[/tex]
[tex]zad.b\\\\\frac{\pi }{13} \cdot 3\frac{1}{3} \cdot \frac{0,13}{2} =\frac{\pi }{13} \cdot \frac{10}{3} \cdot 0,13 \div 2 =\frac{\pi }{13} \cdot \frac{10}{3} \cdot \frac{13}{100} \cdot \frac{1}{2} =\frac{\pi }{13} \cdot \frac{13}{100} \cdot \frac{10}{3} \cdot \frac{1}{2} = \frac{\pi }{60} \\\\\ gdy ~~\pi \cong 3,14~~\land ~~\frac{\pi }{60} ~~\Rightarrow \frac{3,14}{60} =3,14 \div 60 = \frac{314}{100}\cdot \frac{1}{60} =\frac{157}{3000}[/tex]
[tex]zad.c\\\\ -1\frac{3}{7} \cdot 2\frac{3}{4} \cdot \frac{7}{10} \cdot 4= -\frac{10}{7} \cdot \frac{11}{4} \cdot \frac{7}{10} \cdot \frac{4}{1} = -\frac{10}{7} \cdot \frac{7}{10}\cdot \frac{11}{4} \cdot\frac{4}{1} = -\frac{11}{1} = - 11[/tex]
