\(a,x=\dfrac{4}{5}\times\dfrac{1}{3}=\dfrac{4}{15}\)
\(b,x=\dfrac{7}{9}\times\dfrac{3}{5}=\dfrac{7}{15}\)
\(c,x=\dfrac{7}{6}\times\dfrac{4}{3}=\dfrac{14}{9}\\ d,x=\dfrac{9}{7}\times\dfrac{8}{4}=\dfrac{18}{7}\)
a,x:1/3=4/5
x =4/5.1/3
x =4/15
b,x:3/5=7/9
x =7,9.3/5
x =7/15
c,x.3/4=7/6
x =7/6:3/4
x = 14/9
d,4/8.x=9.7
x =9/7:4/8
x =18/7