Question

Tìm x biết \(\frac{2-x}{2001}\)-1=\(\frac{1-x}{2002}\)-\(\frac{x}{2003}\)

Answer 1

\(\frac{2-x}{2001}+1=\left(\frac{1-x}{2002}+1\right)+\left(\frac{-x}{2003}+1\right)\)

\(\Leftrightarrow\frac{2003-x}{2001}=\frac{2003-x}{2002}+\frac{2003-x}{2003}\Leftrightarrow\left(2003-x\right)\left(\frac{1}{2001}+\frac{1}{2002}+\frac{1}{2003}\right)=0\)<=> x = 2003

Answer 2

cho mik hỏi tại sao lại cộng 1 vậy