Dấu ở giữa là dấu nhân hả bạn ?
-2/3 - 1/3 ( 2x - 5 ) = 3/2
1/3 ( 2x -5 ) = -2/3 - 3/2
1/3 ( 2x - 5 ) = -4/6 - 9/6
1/3 ( 2x - 5 ) = -13/6
2x -5 = -13/6 : 1/3
2x - 5 = -13/2
2x = -13/2 + 5
2x = -13/2 + 10/2
2x = -3/2
x = -3/2 : 2
x= -3/2 .1/2
x = -3/4
\(\frac{-2}{3}-\frac{1}{3}\times\left(2x-5\right)=\frac{3}{2}\)
\(\Leftrightarrow\frac{1}{3}\times\left(2x-5\right)=\frac{-13}{6}\)
\(\Leftrightarrow2x-5=\frac{-13}{2}\)
\(\Leftrightarrow2x=\frac{-3}{2}\)
\(\Leftrightarrow x=\frac{-3}{4}\)
Vậy \(x=\frac{-3}{4}\)
Học tốt
1/3.(2x-5)=-2/3-3/2
1/3.(2x-5)=-13/6
(2x-5)=-13/6:1/3
(2x-5)=-13/6.3/1
(2x-5)=-13/2
2x=-13/2+5
2x=-3/2
x=-3/2:2
x=-3/2.1/2
x=-3/4
vậy x=-3/4