C = [1-($\frac{2}{5}$ -$\frac{4}{3}$ )]-[(0,8-1)-(1,4+2)]
= [1-$\frac{6}{15}$-$\frac{20}{15}$)]-[($\frac{4}{5}$ -1)-($\frac{7}{5}$+2)]
= [1-$\frac{-14}{15}$)]-[$\frac{-1}{5}$ - $\frac{17}{5}$]
= $\frac{29}{15}$ - $\frac{-18}{5}$
=$\frac{29}{15}$ - $\frac{-54}{15}$
=$\frac{83}{15}$