Cześć ;-)
Obliczenia
[tex]\dfrac{12}{36}=\dfrac{12:12}{36:12}=\dfrac{1}{3}\\\\\\\dfrac{21}{49}=\dfrac{21:7}{49:7}=\dfrac{3}{7}\\\\\\\dfrac{16}{84}=\dfrac{16:4}{84:4}=\dfrac{4}{21}[/tex]
Pozdrawiam! ~ JulkaOdMatmy