Heya.
[tex]5*\frac{2}{17} = \frac{5}{1} *\frac{2}{17} = \frac{10}{17} \\\\5*\frac{8}{17} = \frac{5}{1} * \frac{8}{17} = \frac{40}{17} = 2\frac{6}{17} \\\\3*\frac{7}{12} = \frac{3}{1} *\frac{7}{12} = \frac{21}{12} = 1\frac{3}{4} \\\\3* 1\frac{5}{12} = \frac{3}{1} *\frac{17}{12} = \frac{51}{12} = 4\frac{1}{4}[/tex]
Mam nadzieję że pomogłem! ~EnglishElite
