Szczegółowe wyjaśnienie:
Zadanie 16
A.
[tex]8 \frac{4}{5} + \frac{6}{5} \div \frac{18}{5} = 8 \frac{4}{5} + \frac{6}{5} \times \frac{5}{18} = 8 \frac{4}{5} + \frac{6}{18} = 8 \frac{12}{15} + \frac{5}{15} = 8 \frac{17}{15} = 9 \frac{2}{15} [/tex]
B.
[tex](5 \frac{1}{8} - 2 \frac{5}{6} ) \times ( \frac{2}{5} + \frac{2}{7} ) = (5 \frac{3}{24} - 2 \frac{20}{24} ) \times ( \frac{14}{35} + \frac{10}{35} ) = 2 \frac{7}{24} \times \frac{24}{35} = \frac{55}{24} \times \frac{24}{35} = \frac{55}{35} = \frac{11}{7} = 1 \frac{4}{7} [/tex]
Zadanie 17
[tex]x \div \frac{3}{4} = \frac{17}{6 } \\ x = \frac{17}{6} \times \frac{3}{4} \\ x = \frac{17}{2} \times \frac{1}{4} \\ x = \frac{17}{8} \\ x = 2 \frac{1}{8} [/tex]
W razie pytań pisz śmiało,
Venty
