Question

-1/2+1/2.x=2/3

giải dùng mình

Answer 1

1/2.x = 2/3 - (-1)/2

1/2.x = 7/6

      x = 7/6 : 1/2

      x = 7/3

vậy x=...

Answer 2

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

\(\dfrac{1}{2}.x=\dfrac{2}{3}-\dfrac{-1}{2}\)

\(\dfrac{1}{2}.x=\dfrac{7}{6}\)

\(x=\dfrac{7}{6}\div\dfrac{1}{2}\)

\(x=\dfrac{7}{6}\times\dfrac{2}{1}\)

\(x=\dfrac{7}{3}\)