Question

Tìm x biết : x-2/4 = -16/2-x

Answer 1

\(x-\frac{2}{4}=\frac{-16}{2}-x\)

\(x-\frac{1}{2}=-8-x\)

\(x+x=-8+\frac{1}{2}\)

\(2x=\frac{-15}{2}\)

\(x=\frac{-15}{4}\)

vậy \(x=\frac{-15}{4}\)

Answer 2

Ta có : \(\frac{x-2}{4}=\frac{-16}{2-x}\)

\(\Rightarrow\left(x-2\right)\left(2-x\right)=-16.4=-64=-8.8\)

Ta thấy (x - 2) và (2 - x) là 2 số đối nhau . 

\(\Rightarrow x-2=8\)

\(\Rightarrow x=10\)

Answer 3

\(x-\frac{2}{4}=\frac{-16}{2}-x\)

\(x+x=\frac{-16}{2}+\frac{2}{4}\)

\(2x=-8+\frac{1}{2}\)

\(2x=\frac{-15}{2}\)

\(x=\frac{-15}{4}\)

vậy \(x=\frac{-15}{4}\)