Verified answer

Ответ:

[tex]2.3 \times ( - \frac{1}{4} ) = 2.3 \times ( - 0.25) = - 0.575[/tex]

[tex] \frac{7}{8} \times ( - \frac{4}{7} ) = \frac{1}{2} \times ( - \frac{1}{1} ) = - \frac{1}{2} = - 0.5[/tex]

[tex] - 1 \frac{1}{9} \times \frac{9}{8} = \frac{10}{9} \times \frac{9}{8} = \frac{5}{1} \times \frac{1}{4} = \frac{5}{4} = 1 \frac{1}{4} = 1.25[/tex]