`3/5 xx x = 4/7`
`x = 4/7 : 3/5`
`x = 4/7 xx 5/3`
`x = 12/35`
a) x = 4/7 : 3/5
x = 20/21
b) x = 1/8 : 1/8
x = 1
c) x = 22 + 7/11
x = 249/11
d) x = 2/5 - 1/7
x = 9/35
7/6 x x = 9/12
x = 9/12 : 7/6
x = 9/14
a) x = 4/7 : 3/5
x = 20/21
b) x = 1/8 : 1/8
x = 1
c) x = 22 - 7/11
x = 235/11
d) x = 2/5 - 1/7
x = 9/35
7/6 x x = 9/12
x = 9/12 : 7/6
x = 9/14
(ko chắc lắm)
\(a.x=\dfrac{4}{7}:\dfrac{3}{5}\\ x=\dfrac{4}{7}\times\dfrac{5}{3}\\ x=\dfrac{20}{21}\\ b.x=\dfrac{1}{8}:\dfrac{1}{8}\\ x=\dfrac{1}{8}\times\dfrac{8}{1}\\ x=1\\ c.x=22-\dfrac{7}{11}\\ x=\dfrac{242}{11}-\dfrac{7}{11}\\ x=\dfrac{235}{11}\\ d.x=\dfrac{2}{5}-\dfrac{1}{7}\\ x=\dfrac{14}{35}-\dfrac{5}{35}\\ x=\dfrac{9}{35}\\ e.\dfrac{7}{6}\times x=\dfrac{9}{12}\\ x=\dfrac{9}{12}:\dfrac{7}{6}\\ x=\dfrac{9}{12}\times\dfrac{7}{6}\\ x=\dfrac{9}{14}\)
