\(2009-\left|x-2009\right|=x\)
\(\left|x-2009\right|=2009-x\)
\(th1:x-2009=2009-x\)
\(x+x=2009.2009\)
\(2x=4018\)
\(x=\frac{4018}{2}=2009\)
\(\)
\(\)
\(2019-\left|x-2019\right|=x\)
\(\Leftrightarrow\left|x-2019\right|=2019-x\)
\(\Rightarrow\orbr{\begin{cases}x-2019=2019-x\\x-2019=-2019+x\left(VN\right)\end{cases}\Rightarrow x=2019}\)
Lưu ý : VN là vô nghiệm
\(Th2:\)vô lý nha bn
hok tốt!
