Cześć!
a)
[tex] \frac{7}{20} = \frac{7 \times 5}{20 \times 5} = \frac{35}{100} = 0.35[/tex]
b)
[tex] \frac{13}{25} = \frac{13 \times 4}{25 \times 4} = \frac{52}{100} = 0.52[/tex]
c)
[tex]2 \frac{2}{125} = 2 \frac{2 \times 8}{125 \times 8} = 2 \frac{16}{1000} = 2.016[/tex]
d)
[tex]3 \frac{7}{40} = 3 \frac{7 \times 25}{40 \times 25} = 3 \frac{175}{1000} = 3.175[/tex]