$\frac{1}{2}$ +$\frac{16}{21}$+ $\frac{27}{13}$ -($\frac{14}{13}$- $\frac{5}{24}$ ) ;
<=>$\frac{1}{2}$ +$\frac{16}{21}$+ $\frac{27}{13}$ - $\frac{14}{13}$ + $\frac{5}{24}$ ;
<=> $\frac{3276}{6552}$ +$\frac{4992}{6552}$ +$\frac{13}{13}$ +$\frac{1365}{6552}$;
<=> $\frac{3276}{6552}$ +$\frac{4992}{6552}$ +1 +$\frac{1365}{6552}$;
<=> $\frac{3276}{6552}$ +$\frac{4992}{6552}$ +$\frac{6552}{6552}$ +$\frac{1365}{6552}$;
<=> $\frac{(3276+4992+6552+1365)}{6552}$ ;
<=> $\frac{16185}{6552}$
<=> $\frac{415}{168}$
