Question

[Kim Bài Sơ Cửu]

Ai nhanh mà đúng mk tik cho nek

/2x-3/=3-\(2\frac{3}{4}\)

Tím x nhé mn

Answer 1

[Đặng Ngọc Quỳnh]

\(\left|2x-3\right|=3-2\frac{3}{4}\)

\(\Rightarrow\left|2x-3\right|=3-\frac{11}{4}\)

\(\Rightarrow\left|2x-3\right|=\frac{1}{4}\)

\(\Rightarrow\orbr{\begin{cases}2x-3=\frac{1}{4}\\2x-3=\frac{-1}{4}\end{cases}\Rightarrow\orbr{\begin{cases}2x=\frac{13}{4}\\2x=\frac{11}{4}\end{cases}\Rightarrow}\orbr{\begin{cases}x=\frac{13}{8}\\x=\frac{11}{8}\end{cases}}}\)

Vậy \(x=\frac{13}{8}\)hoặc \(x=\frac{11}{8}\)

Answer 2

[Nguyễn Minh Đăng]

Ta có: \(\left|2x-3\right|=3-2\frac{3}{4}\)

\(\Leftrightarrow\left|2x-3\right|=\frac{1}{4}\)

\(\Leftrightarrow\orbr{\begin{cases}2x-3=\frac{1}{4}\\2x-3=-\frac{1}{4}\end{cases}}\Leftrightarrow\orbr{\begin{cases}2x=\frac{13}{4}\\2x=\frac{11}{4}\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=\frac{13}{8}\\x=\frac{11}{8}\end{cases}}\)