= $\frac{3}{7}$ + $\frac{1}{3}$ + $\frac{19}{34}$ - $\frac{4}{3}$ + $\frac{3}{7}$
= ( $\frac{3}{7}$ + $\frac{3}{7}$ ) + ($\frac{1}{3}$ - $\frac{4}{3}$) + $\frac{19}{34}$
= $\frac{6}{7}$ + ${(-1)}$ + $\frac{19}{34}$
= $\frac{-1}{7}$ + $\frac{19}{34}$
= $\frac{-34}{238}$ + $\frac{133}{238}$
= $\frac{99}{238}$
$\text{STUDY WELL !}$