Szczegółowe wyjaśnienie:
[tex]20 \times \frac{1}{30 } \times 6 = 120 \times \frac{1}{30} = \frac{120}{1} \times \ \frac{1}{30} = \frac{120}{30} = 4[/tex]
[tex]6 \times ( \frac{5}{12} + \frac{4}{12} ) = 6 \times \frac{9}{12} = \frac{6}{1} \times \frac{9}{12} = \frac{54}{12} = 4 \frac{6}{12} = 4 \frac{1}{2} [/tex]
[tex]4 \times \frac{5}{8} = \frac{20}{8} = 2 \frac{1}{2} [/tex]
[tex]6 \frac{12}{15} - 3 \frac{5}{15} = 3 \frac{7}{15} [/tex]
[tex]4 - 2 \frac{3}{17} = 1 \frac{14}{17} [/tex]
[tex]2 \frac{9}{20} - 1 \frac{11}{20} = \frac{49}{20} - \frac{31}{20} = \frac{18}{20} = \frac{9}{10} [/tex]
[tex]6 - (6 - 5 \frac{2}{3} ) = 6 - \frac{1}{3} = 5 \frac{2}{3} [/tex]
W razie pytań pisz śmiało,
Venty
