Oblicz iloczyny : [latex]frac{1}{5} [/latex] liczby 15 to ... [latex]frac{2}{3} [/latex] liczby 15 to ... [latex]frac{4}{5}[/latex] liczby 15 to ... [latex]frac{1}{3}[/latex] * 18 = [latex]frac{1}{9} [/latex] * 18 = [latex]frac{5}{9}[/latex] * 18 =

[latex]frac{1}{5}*15 = frac{1}{5}*frac{15}{1} =frac{15}{5} = 15:5 = 3[/latex] [latex]frac{2}{3}*15 = frac{2}{3}*frac{15}{1} = frac{30}{3} = 30:3 = 10[/latex] [latex]frac{4}{5}*15 = frac{4}{5}*frac{15}{1} = frac{60}{5} = 60:5 = 12[/latex] [latex]frac{1}{3}*18 = frac{1}{3}*frac{18}{1} = frac{18}{3} = 18:3 = 6[/latex] [latex]frac{1}{9}*18 = frac{1}{9}*frac{18}{1} = frac{18}{9} = 18:9 = 2[/latex] [latex]frac{5}{9}*18 = frac{5}{9}*frac{18}{1} = frac{90}{9} = 90:9 = 10[/latex]