[tex]poziom\ A)\\\\ d)\\\\\frac{3}{7}\ liczby\ 28\ to\ :\ \ \frac{3}{\not{7}^1}*\not{28}^4=12\\\\e)\\\\ \frac{7}{5}\ liczby\ 10\ to\ :\ \ \frac{7}{\not{5 }^1}*\not{10}^2=14 \\\\ f)\\\\\frac{5}{14}\ liczby\ 21\ to\ :\ \ \frac{3}{\not{14}^2}*\not{21}^3= \frac{9}{2}=4,5[/tex]
[tex]poziom\ B)\\\\ e)\\\\ a=14,\ \ b=21\\\\\frac{a}{b}=\frac{14}{21}=\frac{2}{3}\\\\f)\\\\a=18,\ \ b=20\\\\\frac{a}{b}=\frac{18}{20}=\frac{9}{10}[/tex]
[tex]poziom\ C)\\\\d)\\\\ 0,2\ tej\ liczby\ to\ 7\\\\0,2\ \ -\ \ 7\\\\1\ \ -\ \ x\\\\x=\frac{1*7}{0,2} =7:0,2=7:\frac{2}{10}=7:\frac{1}{5}=7*5=35[/tex]
[tex]e)\\\\ \frac{3}{8}\ tej\ liczby\ to\ 4\\\\ \frac{3}{8}\ \ -\ \ 4\\\\1\ \ -\ \ x\\\\x=\frac{1*4}{ \frac{3}{8}} =4:\frac{3}{8}=4*\frac{8}{3}=\frac{32}{3}=10\frac{2}{3}[/tex]
[tex]f)\\\\ 0,15\ tej\ liczby\ to\ 12\\\\ 0,15\ \ -\ \ 12\\\\1\ \ -\ \ x\\\\x=\frac{1*12}{0,15} =12: 0,15=12:\frac{15}{100}=12:\frac{3}{20}=\not{12}^4*\frac{20}{\not{3}^1}=80[/tex]
