Question

( -\(\dfrac{2}{3}\) + \(\dfrac{3}{7}\) ) : \(\dfrac{4}{5}\) + (-\(\dfrac{1}{3}\) + \(\dfrac{4}{7}\)) : \(\dfrac{4}{5}\)

Answer 1

\(\left(-\dfrac{2}{3}+\dfrac{3}{7}\right)\cdot\dfrac{5}{4}+\left(-\dfrac{1}{3}+\dfrac{4}{7}\right)\cdot\dfrac{5}{4}\)

\(=\left(-\dfrac{2}{3}+\dfrac{3}{7}-\dfrac{1}{3}+\dfrac{4}{7}\right)\cdot\dfrac{5}{4}\)

=0

Answer 2

=(-5/21).5/4+5/21.5/4

=(-5/21+5/21).5/4

=0.5/4

=0