1 2/3 : 1 7/8 =  daje naj  pls na dziś

1 2/3 : 1 7/8 = 5/3 : 15/8 = 5/3 * 8/15 = 40/45 = 8/9

[latex]1frac{2}{3}: 1frac{7}{8}=frac{5}{3}:frac{15}{8}=frac{5}{3}cdot frac{8}{15}=frac{8}{9} \\ Ogolnie: \\ frac{a}{b} :frac{c}{d}=frac{a}{b} cdot frac{d}{c} [/latex]