\(2\cdot12=4\cdot6\)
=>\(\dfrac{2}{4}=\dfrac{6}{12};\dfrac{2}{6}=\dfrac{4}{12};\dfrac{4}{2}=\dfrac{12}{6};\dfrac{6}{2}=\dfrac{12}{4}\)
\(6\cdot8=12\cdot4\)
=>\(\dfrac{6}{4}=\dfrac{12}{8};\dfrac{6}{12}=\dfrac{4}{8};\dfrac{4}{6}=\dfrac{8}{12};\dfrac{12}{6}=\dfrac{8}{4}\)
\(9\cdot8=12\cdot6\)
=>\(\dfrac{9}{12}=\dfrac{6}{8};\dfrac{9}{6}=\dfrac{12}{8};\dfrac{12}{9}=\dfrac{8}{6};\dfrac{6}{9}=\dfrac{8}{12}\)