Question

\(\dfrac{-5}{7}.\dfrac{2}{11}+\dfrac{-5}{7}.\dfrac{9}{11}+\dfrac{5}{7}\)
 

Answer 1

=-5/7(2/11+9/11)+5/7

=-5/7+5/7

=0

Answer 2

\(-\dfrac{5}{7}\times\dfrac{2}{11}+-\dfrac{5}{7}\times\dfrac{9}{11}+\dfrac{5}{7}\\ =-\dfrac{5}{7}\times\left(\dfrac{2}{11}+\dfrac{9}{11}\right)+\dfrac{5}{7}\\ =-\dfrac{5}{7}\times1+\dfrac{5}{7}\\ =-\dfrac{5}{7}+\dfrac{5}{7}\\ =0\)