Пошаговое объяснение:

[tex]( \frac{7}{8} - ( - \frac{3}{4} ) \times ( - 4)[/tex]

1)

[tex] - \frac{3}{4} \times ( - 4) = - \frac{3}{4} \times - ( \frac{4}{1}) = 3 [/tex]

2)

[tex] \frac{7}{8} - 3 = \frac{7}{8} - \frac{24}{8} = \frac{7 - 24}{8} = - \frac{17}{8} [/tex]