Question

giúp mình với hứa trả đủ

Answer 1

\(\dfrac{-3}{7}\times\dfrac{5}{9}+\dfrac{4}{9}\times\dfrac{-3}{7}\times2\dfrac{3}{7}=\dfrac{-3}{7}\times\left(\dfrac{5}{9}+\dfrac{4}{9}\right)+\dfrac{17}{7}=-\dfrac{3}{7}+\dfrac{17}{7}=\dfrac{14}{7}=2\)

Answer 2

\(\dfrac{-3}{7}.\dfrac{5}{9}+\dfrac{4}{9}.\dfrac{-3}{7}+2\dfrac{3}{7}\)

= \(\dfrac{-3}{7}.\dfrac{5}{9}+\dfrac{4}{9}.\dfrac{-3}{7}+\dfrac{17}{7}\)

=\(\dfrac{-3}{7}.\left(\dfrac{5}{9}+\dfrac{4}{9}\right)+\dfrac{17}{7}\)

= \(\dfrac{-3}{7}.1+\dfrac{17}{7}\)

= \(\dfrac{-3}{7}+\dfrac{17}{7}\)

= 2