2x - (x - 3) = \(\frac{1}{2}\)
2x - x + 3 = \(\frac{1}{2}\)
x + 3 = \(\frac{1}{2}\)
x = \(\frac{1}{2}-3\)
x = \(\frac{-5}{2}\)
đúng nhé !
\(2x-\left(x-3\right)=\frac{1}{2}\)
\(2x-x+3=\frac{1}{2}\)
\(x+3=\frac{1}{2}\)
\(x=\frac{1}{2}-3\)
\(x=-\frac{5}{6}\)