a,$8,16:(1,32+3,48)-0,564$
$=8,16:4,8-0,564$
$=1,7-0,564$
$=1,136$
b,$\frac{15}{7}$$+$$\frac{4}{5}$× $\frac{2}{7}$-$2$=$\frac{277}{140}$
c,$\frac{4}{9}$: $\frac{5}{3}$+ $\frac{1}{3}$× $3$= $\frac{19}{15}$
$\frac{19}{15}$> $\frac{1}{2}$
Chúc bạn học tốt nhé! ^^