Question

-5/7.2/11+-5/7.9/11+1 và 5/7

Answer 1

ta có: \(\frac{-5}{7}.\frac{2}{11}+\frac{-5}{7}.\frac{9}{11}\)

           \(=\frac{-5}{7}.\left(\frac{2}{11}+\frac{9}{11}\right)\)

             \(=\frac{-5}{7}\)

\(\Rightarrow\frac{-5}{7}< \frac{5}{7}\)

\(\Rightarrow\frac{-5}{7}.\frac{2}{11}+\frac{-5}{7}.\frac{9}{11}< \frac{5}{7}\)

Học tốt nhé bn !!!