Question

2 phần 13 . x = -4 phần 13

Answer 1

Answer 2

\(\dfrac{2}{13x}=-\dfrac{4}{13}\Rightarrow\dfrac{2}{x}=-4\Rightarrow-4x=2\Rightarrow x=-\dfrac{1}{2}\)

Answer 3

Ta có: \(\dfrac{2}{13}\cdot x=\dfrac{-4}{13}\)

\(\Leftrightarrow x=\dfrac{-4}{13}:\dfrac{2}{13}=\dfrac{-4}{13}\cdot\dfrac{13}{2}=-2\)

Answer 4

\(\dfrac{2}{13}.x=\dfrac{-4}{13}\)

\(\Leftrightarrow x=\dfrac{-4}{13}.\dfrac{13}{2}\)

\(\Leftrightarrow x=-2\)

Answer 5

\(\dfrac{2}{13}.x=\dfrac{-4}{13}\)

       \(x=\dfrac{-4}{13}:\dfrac{2}{13}\)

      \(x=-2\)

Answer 6

\(\dfrac{2}{13}x=\dfrac{-4}{13}\)

<=> 2x = -4

<=> x = -2