Odpowiedź :
Odpowiedź:
[tex]\dfrac{18}{21}=\dfrac{18:3}{21:3}=\dfrac{6}{7}\\\\\\\dfrac{68}{8}=\dfrac{68:4}{8:4}=\dfrac{17}{2}\ \ \ \ \ \ lub\ \ \ \ \dfrac{68}{8}=\dfrac{68:2}{8:2}=\dfrac{34}{4}=\dfrac{34:2}{4:2}=\dfrac{17}{2}[/tex]
Odpowiedź:
[tex]\dfrac{18}{21}=\dfrac{18:3}{21:3}=\dfrac{6}{7}\\\\\\\dfrac{68}{8}=\dfrac{68:4}{8:4}=\dfrac{17}{2}\ \ \ \ \ \ lub\ \ \ \ \dfrac{68}{8}=\dfrac{68:2}{8:2}=\dfrac{34}{4}=\dfrac{34:2}{4:2}=\dfrac{17}{2}[/tex]