Question

Answer 1

=>5/7-x=1

hay x=-2/7

Answer 2

`5/7-x=(-1)/2+3/2`

`5/7-x=(-1+3)/2`

`5/7-x=2/2`

`5/7-x=1`

`x=5/7-1`

`x=5/7-7/7`

`x=(-2)/7`

Answer 3

\(\dfrac{5}{7}-x=\dfrac{-1}{2}+\dfrac{3}{2}\)

\(\dfrac{5}{7}-x=1\)

\(x=\dfrac{5}{7}-1\)

\(x=\dfrac{-2}{7}\)

Answer 4

\(a,\dfrac{5}{7}-x=\dfrac{-1}{2}+\dfrac{3}{2}\)

   \(\dfrac{5}{7}-x=1\)

          \(x=\dfrac{5}{7}-1\)

          \(x=\dfrac{-2}{7}\)