Question

[Huy Hoàng Vũ]

b) tìm x biết : 1) -2/3 (x-1/4) = 1/3 (2x-1)

Answer 1

[Dang Tung]

\(-\dfrac{2}{3}\left(x-\dfrac{1}{4}\right)=\dfrac{1}{3}\left(2x-1\right)\\ \Rightarrow-\dfrac{2}{3}x+\dfrac{1}{6}=\dfrac{2}{3}x-\dfrac{1}{3}\\ \Rightarrow\dfrac{2}{3}x+\dfrac{2}{3}x=\dfrac{1}{3}+\dfrac{1}{6}\\ \Rightarrow\dfrac{4}{3}x=\dfrac{1}{2}\\ \Rightarrow x=\dfrac{1}{2}:\dfrac{4}{3}\\ \Rightarrow x=\dfrac{3}{8}\)