Odpowiedź :
[tex]a) 5 * \frac{2}{3} = \frac{5}{1} * \frac{2}{3} = \frac{5*2}{1*3} = \frac{10}{3} = 3\frac{1}{3}[/tex]
[tex]b) 5 * \frac{7}{15} = \frac{5}{1} * \frac{7}{15} = \frac{5*7}{1*15} = \frac{35}{15} = 2\frac{5}{15} = 2\frac{1}{3}[/tex]
[tex]a) 5 * \frac{2}{3} = \frac{5}{1} * \frac{2}{3} = \frac{5*2}{1*3} = \frac{10}{3} = 3\frac{1}{3}[/tex]
[tex]b) 5 * \frac{7}{15} = \frac{5}{1} * \frac{7}{15} = \frac{5*7}{1*15} = \frac{35}{15} = 2\frac{5}{15} = 2\frac{1}{3}[/tex]