Question

\(5\dfrac{4}{7}:x-26=13\)

Answer 1

`5 4/7:x-26=13`

`39/7:x=13+26`

`39/7:x=39`

`x=39/7:39`

`x=1/7`

Vậy `x=1/7`

Answer 2

\(5\dfrac{4}{7}:x-26=13\) 

        \(\dfrac{39}{7}:x=13+26\) 

         \(\dfrac{39}{7}:x=39\) 

                 \(x=\dfrac{39}{7}:39\) 

                 \(x=\dfrac{1}{7}\)

Answer 3

Ta có: \(5\dfrac{4}{7}:x-26=13\)

\(\Leftrightarrow\dfrac{39}{7}:x=39\)

\(\Leftrightarrow x=\dfrac{39}{7}:39=\dfrac{39}{7}\cdot\dfrac{1}{39}\)

hay \(x=\dfrac{1}{7}\)

Vậy: \(x=\dfrac{1}{7}\)

Answer 4

\(5\dfrac{4}{7}:x-26=13\)

\(\dfrac{39}{7}:x=13+26\)

\(\dfrac{39}{7}:x=39\)
\(x=\dfrac{39}{7}:39\)

\(x=\dfrac{39}{7}.\dfrac{1}{39}\)

\(x=\dfrac{39}{273}=\dfrac{1}{7}\)

Vậy x = \(\dfrac{1}{7}\)