Cześć!
a)
[tex]\dfrac{1}{4}=\dfrac{1\cdot25}{4\cdot25}=\dfrac{25}{100}=\huge\boxed{0,25}[/tex]
b)
[tex]\dfrac{7}{20}=\dfrac{7\cdot5}{20\cdot5}=\dfrac{35}{100}=\huge\boxed{0,35}[/tex]
