Question

Answer 1

Bài 4

a) \(x\times\dfrac{3}{8}=\dfrac{4}{7}\)

    \(x=\dfrac{4}{7}\div\dfrac{3}{8}\)

   \(x=\dfrac{32}{21}\)

b) \(x\div\dfrac{1}{7}=\dfrac{1}{8}\)

   \(x=\dfrac{1}{8}\times\dfrac{1}{7}\)

   \(x=\dfrac{1}{56}\)

Answer 2

thi

Answer 3

a, 32/21, b,1/56

Answer 4

a) _{^{\(x\times\dfrac{3}{8}=\dfrac{4}{7}\)}}

    _{^{\(x=\dfrac{4}{7}:\dfrac{3}{8}\)}}

     _{^{\(x=\dfrac{32}{21}\)}}

 

b) _{^{\(x:\dfrac{1}{7}=\dfrac{1}{8}\)}}

   ^{_{\(x=\dfrac{1}{8}\times\dfrac{1}{7}\)}}

   ^{_{\(x=\dfrac{1}{56}\)}}

Answer 5

thi ak

Answer 6

a,x = 4/7 : 3/8

x= 32/21

b, x = 1/8 x 1/7

    x = 1/56