Question

 

tìm x biết :

x-(2018-x)=x-2017x-

 

Answer 1

 x - (2018 - x) = x - 2017x

<=> \(x-2018+1=x-2017\)x

<=> \(x-x+2017x=-1+2018\)

<=>\(\left(1-1+2017\right)x=2017\)

<=>\(2017x=2017\)

<=>\(x=1\)

Answer 2

\(x-\left(2018-x\right)=x-2017x.\)

\(\Leftrightarrow x-2018+x+2017x-x=0\)

\(\Leftrightarrow2018x=2018\)

\(\Leftrightarrow x=1\)