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

Hope it will be helpful..

Answer 2

$- \frac{ 4}{5} \times \frac{5}{7} \times ( - \frac{8}{9} ) \: \: \: + \frac{8}{9} \times \frac{4}{7} \\ \frac{8}{9} ( \frac{4}{7} + \frac{4}{7} ) \\ \frac{8}{9} (2 \times \frac{4}{7} ) \\ \frac{8}{9} ( \frac{8}{7} ) \\ \frac{64}{63}$
This solution done with the preference of rule
B O D M A S
B - bracket
O - open
D - division
M - multiplication
A - addition
S - subtraction