Question

Tìm \(x\), biết : \(x\) x \(\dfrac{4}{7}\) = \(\dfrac{1}{2}\).

A. \(x\) = \(\dfrac{4}{14}\)               B. \(x\) = \(\dfrac{8}{7}\)                 C. \(x\) = \(\dfrac{7}{8}\)                    D. \(x\) = \(\dfrac{5}{9}\)

Answer 1

\(x=\dfrac{1}{2}:\dfrac{4}{7}\)

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

C

Answer 2

c

Answer 3

`x xx4/7 = 1/2`

`x=1/2:4/7`

`x=1/2xx7/4`

`x=7/8`