Odpowiedź:
30[tex]\frac{138}{155}[/tex]
Szczegółowe wyjaśnienie:
[tex]\frac{0,8:\frac{1}{2}+5:\frac{1}{5} }{0,5:2+(\frac{1}{3}:3 +0,5)}[/tex]= [tex]\frac{\frac{8}{10} *\frac{2}{1} +5*5}{\frac{1}{2} :2+(\frac{1}{3}*\frac{1}{3}+\frac{1}{2} ) }[/tex] = [tex]\frac{\frac{16}{10}+25 }{\frac{1}{2}*\frac{1}{2}+(\frac{1}{9}+\frac{1}{2}) }[/tex] = [tex]\frac{1\frac{6}{10}+25 }{\frac{1}{4}+(\frac{2}{18}+\frac{9}{18}) }[/tex] = [tex]\frac{26\frac{6}{10} }{\frac{1}{4}+\frac{11}{18} }[/tex] = [tex]\frac{26\frac{3}{5} }{\frac{9}{36}+\frac{22}{36} }[/tex] =
= [tex]\frac{133}{5} : \frac{31}{36}[/tex] = [tex]\frac{133}{5} *\frac{36}{31}[/tex] = [tex]\frac{4788}{155}[/tex] = 30[tex]\frac{138}{155}[/tex]
