Odpowiedź:
a[tex] \frac{( - 16) + 7 \times ( - 17)}{ - 5} = \frac{( - 16) + ( - 119)}{ - 5} = \frac{( - 135)}{ - 5} = 27[/tex]
b
[tex] \frac{2}{5} \div ( - \frac{4}{5} ) + 1 \frac{2}{5} - ( - 2 \frac{1}{4} ) \times ( - \frac{4}{5} ) = \\ = \frac{2}{5} \times ( - \frac{5}{4} ) + 1 \frac{2}{5} - ( - \frac{9}{4} ) \times ( - \frac{4}{5} ) = \\ = - \frac{10}{20} + \frac{28}{20 } - \frac{36}{20} = - \frac{ 18}{20} = \\ = - \frac{9}{10} [/tex]
