Question

simply using appropriate properties
$\frac{ - 4}{5} \times \frac{5}{7} \times ( \frac{ - 8}{9} ) + \frac{ - 8}{9} \times \frac{4}{7} =$

Answer 1

hey friend here is your answer ⬇️⬇️☺️

$\frac{ - 4}{5} \times \frac{5}{7} \times ( \frac{ - 8}{9} ) + \frac{ - 8}{9} \times \frac{4}{7} \\ = \frac{ - 4 \times - 8}{7 \times 9} + \frac{ - 8 \times 4}{9 \times 7} \\ = \frac{32}{63} - \frac{ 32 }{63} \\ = \frac{32 - 32}{63} \\ = \frac{0}{63} \\ = 0$

hope it helps you ✌️