âm 2( số -2) và 4/25
\(\frac{-3}{31}+\frac{-6}{17}+\frac{1}{25}+\frac{-28}{31}+\frac{-11}{17}+\frac{-1}{5}\)
\(=\left(\frac{-3}{31}+\frac{-28}{31}\right)+\left(\frac{-6}{17}+\frac{-11}{17}\right)+\left(\frac{1}{25}+\frac{-1}{5}\right)\)
\(=\frac{-31}{31}+\frac{-17}{17}+\frac{-4}{25}\)
\(=\left(-1\right)+\left(-1\right)+\frac{-4}{25}\)
\(=\frac{\left(-25\right)+\left(-25\right)+\left(-4\right)}{25}\)
\(=\frac{-54}{25}\)
(-3/31+-28/31)+(6/17+11/17)+1/25+-1/5
-1+-1+1/25 +-1/5
-2+1/25+-1/5
-2/1+1/25+-1/5
-50/25+1/25+-5/25
-49/25+-5/25
-54/25
mik đúng mn k cho mik nha cảm ơn mn
\(\frac{-3}{31}+\frac{-6}{17}+\frac{1}{25}+\frac{-28}{31}+\frac{-11}{17}+\frac{-1}{5}\)
\(=-\frac{3}{31}-\frac{6}{17}+\frac{1}{25}-\frac{28}{31}-\frac{11}{17}-\frac{1}{5}\)
\(=-1-1-\frac{4}{25}=-\frac{54}{25}\)