oblicz 1/5+7 3/8    11-5 4/7      8 1/3-3 3/7     2 2/9 *54/55     15 2/5 :2 1/5 24/25 :16 55:2 7/24

[latex]frac{4}{5}+7frac{3}{8}=frac{32}{40}+7frafrac{15}{40}=8frac{7}{40}\\11-5frac{4}{7}=5frac{3}{7}\\8frac{1}{3}-3frac{3}{7}=8frac{7}{21}-3frac{9}{21}=4frac{19}{21}\\2frac{2}{9}cdotfrac{54}{55}=frac{20}{9}cdotfrac{54}{55}=frac{24}{11}=2frac{2}{11}\\15frac{2}{5}:2frac{1}{5}=frac{77}{5}cdotfrac{5}{11}=7\\frac{24}{25}:16=frac{24}{25}cdotfrac{1}{16}=frac{3}{50}=0,06\\55:2frac{7}{24}=frac{55}{1}cdotfrac{24}{55}=24[/latex]