Question

Answer 1

    \(\dfrac{5}{9}:\left(\dfrac{1}{11}-\dfrac{5}{22}\right)+\dfrac{5}{9}:\left(\dfrac{1}{15}-\dfrac{2}{3}\right)\)

⇔ \(\dfrac{5}{9}:\dfrac{-3}{22}+\dfrac{5}{9}:\dfrac{-3}{5}\)

⇔ \(\dfrac{-110}{27}+\dfrac{-25}{27}\)

⇔ \(-5\)

Answer 2

\(=\dfrac{5}{9}:\left(\dfrac{2}{22}-\dfrac{5}{22}\right)+\dfrac{5}{9}:\left(\dfrac{1}{15}-\dfrac{10}{15}\right)=\dfrac{5}{9}:\left(-\dfrac{3}{22}\right)+\dfrac{5}{9}:\left(-\dfrac{9}{15}\right)=-\dfrac{110}{27}+-\dfrac{25}{27}=-5\)tick mik nha

Answer 3

\(\dfrac{5}{9}:\left(\dfrac{1}{11}-\dfrac{5}{22}\right)+\dfrac{5}{9}:\left(\dfrac{1}{15}-\dfrac{2}{3}\right)\\ =\dfrac{5}{9}:\left(-\dfrac{3}{22}\right)+\dfrac{5}{9}:\left(-\dfrac{3}{5}\right)\\ =\dfrac{5}{9}\cdot\left(-\dfrac{22}{3}-\dfrac{5}{3}\right)\\ =\dfrac{5}{9}\cdot\left(-\dfrac{27}{3}\right)\\ =\dfrac{5}{9}\cdot9=5\)

Answer 4

\(-\dfrac{110}{27}+-\dfrac{25}{27}=-5\)

Answer 5

\(\dfrac{5}{9}:\left(\dfrac{1}{11}-\dfrac{5}{22}\right)+\dfrac{5}{9}:\left(\dfrac{1}{15}-\dfrac{2}{3}\right)=\dfrac{5}{9}:\left(\dfrac{2}{22}-\dfrac{5}{22}\right)+\dfrac{5}{9}\left(\dfrac{1}{15}-\dfrac{10}{15}\right)=\dfrac{5}{9}:\dfrac{-3}{22}+\dfrac{5}{9}:\dfrac{-9}{15}=\dfrac{5}{9};\left(\dfrac{-3}{22}+\dfrac{-9}{15}\right)=\dfrac{5}{9}:\dfrac{-81}{110}=\dfrac{-550}{729}\)

Hoctot!

Answer 6

Ta có: \(\dfrac{5}{9}:\left(\dfrac{1}{11}-\dfrac{5}{22}\right)+\dfrac{5}{9}:\left(\dfrac{1}{15}-\dfrac{2}{3}\right)\)

\(=\dfrac{5}{9}:\dfrac{2-5}{22}+\dfrac{5}{9}:\dfrac{1-10}{15}\)

\(=\dfrac{5}{9}\cdot\dfrac{22}{-3}+\dfrac{5}{9}\cdot\dfrac{15}{-9}\)

\(=\dfrac{5}{9}\left(-\dfrac{22}{3}-\dfrac{15}{9}\right)\)

=-5