$\dfrac{4}{9}$ `:(`$\dfrac{-1}{3}$ `+` $\dfrac{3}{2}$`)+` $\dfrac{4}{9}$ `:(`$\dfrac{-2}{3}$ `+` $\dfrac{1}{2}$`)`
`=` $\dfrac{4}{9}$ `:(`$\dfrac{-1}{3}$ `+` $\dfrac{3}{2}$ `+` $\dfrac{-2}{3}$ `+` $\dfrac{1}{2}$`)`
`=` $\dfrac{4}{9}$ `:[(`$\dfrac{-1}{3}$ `+` $\dfrac{-2}{3}$`)+(`$\dfrac{3}{2}$ `+` $\dfrac{1}{2}$`)]`
`=` $\dfrac{4}{9}$ `:[-1+2]`
`=` $\dfrac{4}{9}$ `:1`
`=` $\dfrac{4}{9}$