$A$=$\frac{1135}{23}$ - $($ $\frac{167}{32}$ + $\frac{456}{23}$ $)$
$A$=$\frac{1135}{23}$ - $\frac{167}{32}$ - $\frac{456}{23}$
$A$=$($$\frac{1135}{23}$ - $\frac{456}{23}$ $)$ - $\frac{167}{32}$
$A$=$\frac{679}{23}$ - $\frac{167}{32}$
$A$=$\frac{17887}{736}$
$B$=$0,7$ x $\frac{8}{3}$ x $20$ x $0,375$ x $\frac{5}{28}$
$B$=$($$0,7$ x $\frac{8}{3}$ x $0,375$ x $\frac{5}{28}$$)$ x $20$
$B$=$\frac{1}{8}$ x $20$
$B$=$\frac{5}{2}$