Szczegółowe wyjaśnienie:
[tex]1\dfrac{1}{4}=1\dfrac{1\cdot2}{4\cdot2}=1\dfrac{2}{8}=1\dfrac{2\cdot2}{8\cdot2}=1\dfrac{4}{16}\\\\2\dfrac{3}{8}=2\dfrac{3\cdot2}{8\cdot2}=2\dfrac{6}{16}=2\dfrac{6\cdot2}{16\cdot2}=2\dfrac{12}{32}\\\\3\dfrac{7}{8}=3\dfrac{7\cdot2}{8\cdot2}=3\dfrac{14}{16}=3\dfrac{14\cdot2}{16\cdot2}=3\dfrac{28}{32}[/tex]
