L = $\dfrac{-9}{25}$ `.` $\dfrac{53}{3}$ `-` $\dfrac{-24}{49}$ `-` $(\dfrac{-3}{5})^2$ . $\dfrac{22}{3}$ + $(\dfrac{5}{-7})^2$
= `-` $\dfrac{9}{25}$ `.` $\dfrac{53}{3}$ `+` $\dfrac{24}{49}$ `-` $\dfrac{9}{25}$ . $\dfrac{22}{3}$ + $\dfrac{25}{49}$
= `-` $\dfrac{9}{25}$ `.` $\dfrac{53}{3}$ `-` $\dfrac{9}{25}$ . $\dfrac{22}{3}$ `+` $\dfrac{24}{49}$ + $\dfrac{25}{49}$
= $\dfrac{9}{25}$ (- $\dfrac{53}{3}$ - $\dfrac{22}{3}$) + 1
= $\dfrac{9}{25}$ . ( $\dfrac{- 75}{3}$ ) + 1
= $\dfrac{9}{25}$ . `(-25) + 1`
`= -9 + 1`
` = -8`