Question

|2x+3|= một phần ba

M.n giúp mik vs ạ

Mik cần gấp.Cảm ơn m,n ạ

Answer 1

\(\left|2x+3\right|=\dfrac{1}{3}\)

⇒\(\left[{}\begin{matrix}2x+3=\dfrac{1}{3}\\2x+3=\dfrac{-1}{3}\end{matrix}\right.\)⇒\(\left[{}\begin{matrix}2x=\dfrac{1}{3}-3\\2x=\dfrac{-1}{3}-3\end{matrix}\right.\)⇒\(\left[{}\begin{matrix}2x=\dfrac{-8}{3}\\2x=\dfrac{-10}{3}\end{matrix}\right.\)

⇒\(\left[{}\begin{matrix}x=\dfrac{-4}{3}\\x=\dfrac{-5}{3}\end{matrix}\right.\)

Vậy \(x=\dfrac{-4}{3},\dfrac{-5}{3}\)