\(\dfrac{8}{15}:\dfrac{2}{11}-\dfrac{7}{15}:\dfrac{2}{11}=\left(\dfrac{8}{15}-\dfrac{7}{15}\right):\dfrac{2}{11}=\dfrac{1}{15}:\dfrac{2}{11}=\dfrac{11}{30}\)
\(\left(\dfrac{8}{15}-\dfrac{7}{15}\right):\dfrac{2}{11}=\dfrac{1}{15}\)x\(\dfrac{11}{2}=\dfrac{11}{30}\)
\(\dfrac{8}{15}\) : \(\dfrac{2}{11}\) - \(\dfrac{7}{15}:\dfrac{2}{11}\) = \(\dfrac{11}{30}\)
\(\dfrac{11}{30}\) tui ko ghi lời giải nên mong bn thông cảm