Odpowiedź:
Odpowiedź w załączniku
c)
[tex]\frac{8}{15} +2\frac{1}{2}*1\frac{1}{3} -\frac{1}{5} =\frac{8}{15} +\frac{5}{2} *\frac{4}{3}-\frac{1}{5} =\frac{8}{15} +\frac{10}{3}-\frac{1}{5}=\frac{8}{15}+\frac{50}{15} -\frac{3}{15} =\frac{55}{15} =\frac{11}{3} =3\frac{2}{3}[/tex]
e)
[tex]\frac{2}{7} +\frac{13}{20} :(\frac{3}{5} :\frac{3}{8} )=\frac{2}{7} +\frac{13}{20}:(\frac{3}{5} *\frac{8}{3} )= \frac{2}{7} +\frac{13}{20}*\frac{5}{8}= \frac{2}{7} +\frac{65}{160}=\frac{2}{7} +\frac{13}{32} =\frac{64}{224} +\frac{91}{224} =\frac{155}{224}[/tex]
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Odpowiedź:
Odpowiedź w załączniku
c)
[tex]\frac{8}{15} +2\frac{1}{2}*1\frac{1}{3} -\frac{1}{5} =\frac{8}{15} +\frac{5}{2} *\frac{4}{3}-\frac{1}{5} =\frac{8}{15} +\frac{10}{3}-\frac{1}{5}=\frac{8}{15}+\frac{50}{15} -\frac{3}{15} =\frac{55}{15} =\frac{11}{3} =3\frac{2}{3}[/tex]
e)
[tex]\frac{2}{7} +\frac{13}{20} :(\frac{3}{5} :\frac{3}{8} )=\frac{2}{7} +\frac{13}{20}:(\frac{3}{5} *\frac{8}{3} )= \frac{2}{7} +\frac{13}{20}*\frac{5}{8}= \frac{2}{7} +\frac{65}{160}=\frac{2}{7} +\frac{13}{32} =\frac{64}{224} +\frac{91}{224} =\frac{155}{224}[/tex]