Odpowiedź:
[tex]\huge\boxed{\boxed{1)=3\frac{3}{5}}}[/tex]
[tex]\huge\boxed{\boxed{2)=3\frac{1}{2}}}[/tex]
Szczegółowe wyjaśnienie:
[tex]2\frac{7}{10}\cdot1\frac{1}{3}=\frac{2\cdot10+7}{10}\cdot\frac{1\cdot3+1}{3}=\frac{20+7}{10}\cdot\frac{3+1}{3}=\frac{\not27^9}{\not10_5}\cdot\frac{\not4^2}{\not3_1}=\frac{18}{5}=3\frac{3}{5}\\\\4\frac{2}{3}\cdot\frac{3}{4}=\frac{4\cdot3+2}{3}\cdot\frac{3}{4}=\frac{12+2}{3}\cdot\frac{3}{4}=\frac{\not14^7}{\not3_1}\cdot\frac{\not3^1}{\not4_2}=\frac{7}{2}=3\frac{1}{2}[/tex]
