a)
[tex]\frac{\frac{17}{40}-0,2}{1\frac35}=(\frac{17}{40}-\frac2{10}):\frac85=(\frac{17}{40}-\frac{8}{40})*\frac58=\frac{9}{40}*\frac58=\frac98*\frac18=\frac{9}{64}[/tex]
b)
[tex]\frac{(3\frac35-2)*5}{0,04}=\frac{1\frac35*5}{\frac4{100}}=(\frac85*5):\frac4{100}=8*\frac{100}{4}=2*100=200[/tex]
c)
[tex]\frac{4\frac38}{1\frac58-0,75}=\frac{35}8:(1\frac58-\frac34)=\frac{35}{8}:(1\frac58-\frac{6}{8})=\frac{35}{8}:(\frac{13}{8}-\frac68)=\frac{35}{8}:\frac78=\frac{35}{8}*\frac87=\frac{35}{7}=5[/tex]
d)
[tex]\frac{\frac37*3,5}{4,5:(2,75-0,25)}=(\frac37*\frac{35}{10}):(4,5:2,5)=(\frac31*\frac5{10}):1,8=\frac{15}{10}:\frac{18}{10}=\frac{15}{10}*\frac{10}{18}=\frac{15}{18}[/tex]
