\(5/2; 1/3 =>15/6; 2/6\)
\(6/7; 3/8 => 48/56; 18/48\) nhé
\(\dfrac{25}{10}=\dfrac{5\times3}{2\times3}=\dfrac{15}{6};\dfrac{25}{75}=\dfrac{1\times2}{3\times2}=\dfrac{2}{6}\\ \dfrac{48}{56}=\dfrac{6\times8}{7\times8}=\dfrac{48}{56};\dfrac{18}{48}=\dfrac{3\times7}{8\times7}=\dfrac{21}{56}\)
a.25/10=5/2=5 x 3/2 x 3=15/6
25/75=1/3=1 x 2/3 x 2=2/6
b.48/56=6/7=6 x 8/7 x 8=48/56
18/48=3/8=3 x 7/8 x 7=21/56