\(a,x=\dfrac{1}{2}.\dfrac{3}{5}\\ x=\dfrac{5}{6}\\ b,x=\dfrac{3}{8}.\dfrac{5}{7}\\ x=\dfrac{15}{56}\\ c,x=\dfrac{4}{7}.\dfrac{1}{3}\\ x=\dfrac{4}{21}\\ d,x=\dfrac{8}{9}:\dfrac{4}{3}\\ x=\dfrac{2}{3}\)
x : 3/5 = 1/2
x = 1/2 x 3/5
x = 3/10
x : 5/7 = 3/8
x = 3/8 x 5/7
x = 15/56
x : 1/3 = 4/7
x = 4/7 x 1/3
x = 4/21
X x 4/3 = 8/9
X = 8/9 : 4/3
X = 2/3
x : 3/5 = 1/2
x = 1/2 x 5/3
x = 5/6
x : 5/7 = 3/8
x = 3/8 x 7/5
x =21/40
x : 1/3 = 4/7
x = 4/7 x 3/1
x = 12/7
X x 4/3 = 8/9
x = 8/9 : 4/3
x = 8/9 x 3/4
x = 24/36
x = 2/3
x : 3/5 = 1/2
x = 1/2 x 3/5
x = 3/10
x : 5/7 = 3/8
x = 3/8 x 5/7
x = 15/56
x : 1/3 = 4/7
x = 4/7 x 1/3
