\(2-\dfrac{53}{21}=\dfrac{42}{21}-\dfrac{53}{21}=-\dfrac{11}{21}\)
\(2-\dfrac{53}{21}=\dfrac{42}{21}-\dfrac{53}{21}=-\dfrac{11}{21}\)
\(2-\dfrac{53}{21}=\dfrac{42}{21}-\dfrac{53}{21}=\dfrac{-11}{21}\)
\(2-\dfrac{53}{21}=\dfrac{42}{21}-\dfrac{53}{21}=\dfrac{-11}{21}\)