Question

3/8*(-4/7)-(4/21)-(5/7)*3/8

Answer 1

$( \frac{3}{8} \times \frac{ - 4}{7}) - \frac{4}{21} - (\frac{5}{7} \times \frac{3}{8}) \\ = \frac{ - 12}{56} - \frac{4}{21} - \frac{15}{56} \\ = ( \frac{ - 12}{56} - \frac{15}{56} ) - \frac{4}{21} \\ = \frac{ - 27}{56} - \frac{4}{21} \\ = \frac{ - 567 - 224}{1176} \\ = \frac{ - 791}{1176} \\ = \frac{ - 113}{168}$
hope this helps..........