\(M=\left(\dfrac{4}{9}-\dfrac{7}{11}\right)-\dfrac{4}{9}-\dfrac{3}{11}\)
\(=\dfrac{4}{9}-\dfrac{7}{11}-\dfrac{4}{9}-\dfrac{3}{11}\)
\(=\left(\dfrac{4}{9}-\dfrac{4}{9}\right)-\left(\dfrac{7}{11}+\dfrac{3}{11}\right)\)
\(=0-\dfrac{10}{11}=-\dfrac{10}{11}\)