Obliczenia
[tex]1\frac{3}{4}+2\frac{2}{5}=1\frac{3\cdot5}{4\cdot5}+2\frac{2\cdot4}{5\cdot4}=1\frac{15}{20}+2\frac{8}{20}=3\frac{23}{20}=4\frac{3}{20}\\[/tex]
