tên níck của bạn đáng ra là kawaii chứ không phải kawai đâu
Ủng hộ tíck mik nha
Pls đó ~~~
\(\frac{x+1}{2013}+\frac{x+2}{2012}+\frac{x+3}{2011}=-3\)
=> \(\frac{x+1}{2013}+1+\frac{x+2}{2012}+1+\frac{x+3}{2011}+1=-3+3\)
=> \(\frac{x+2014}{2013}+\frac{x+2014}{2012}+\frac{x+2014}{2011}=0\)
=> \(\left(x+2014\right).\left(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2011}\right)=0\)
Do \(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2011}\ne0\)
=> x + 2014 = 0
=> x = -2014
\(\frac{x+1}{2013}+\frac{x+2}{2012}+\frac{x+3}{2011}=-3\)
\(\frac{x+1}{2013}+1+\frac{x+2}{2012}+1+\frac{x+3}{2011}+1=0\)
\(\frac{x+2014}{2013}+\frac{x+2014}{2012}+\frac{x+2014}{2011}=0\)
\(\left(x+2014\right).\left(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2011}\right)=0\)
Mà \(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2014}\ne0\)
\(\Rightarrow x+2014=0\)
\(\Rightarrow x=-2014\)
\(\frac{x+1}{2013}+\frac{x+2}{2012}+\frac{x+3}{2011}=-3\)
\(\left(\frac{x+1}{2013}+1\right)+\left(\frac{x+2}{2012}+1\right)+\left(\frac{x+3}{2011}+1\right)=0\)
\(\frac{x+2014}{2013}+\frac{x+2014}{2012}+\frac{x+2014}{2011}=0\)
\(\left(x+2014\right).\left(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2011}\right)=0\)
Vì \(\frac{1}{2013}+\frac{1}{2012}+\frac{1}{2011}>0\) nên x+2014=0
Vậy x=-2014
- Kawai nhé =) account tôi liên quan cô quá cơ =) Xl nhưng chưa biết Kawai ntn thì ĐỪNG cmt =(