Câu hỏi của Nguyễn Chí Nguyễn

Question

(-24/11)+(-19/13)+2/11+(-20/13)

DTD2006ok · Accepted Answer

$\left(\frac{-24}{11}\right)+\left(\frac{-19}{13}\right)+\frac{2}{11}+\left(\frac{-20}{13}\right)$

=> $\left[\left(\frac{-24}{11}\right)+\frac{2}{11}\right]+\left[\left(\frac{-19}{13}\right)+\left(\frac{-20}{13}\right)\right]$

=> $\left(\frac{-22}{11}\right)+\left(\frac{-39}{13}\right)$

=> $-2+-3=-5$Câu trả lời: $\left(\frac{-24}{11}\right)+\left(\frac{-19}{13}\right)+\frac{2}{11}+\left(\frac{-20}{13}\right)$

=> $\left[\left(\frac{-24}{11}\right)+\frac{2}{11}\right]+\left[\left(\frac{-19}{13}\right)+\left(\frac{-20}{13}\right)\right]$

=> $\left(\frac{-22}{11}\right)+\left(\frac{-39}{13}\right)$

=> $-2+-3=-5$