Question

so sánh :

\(-\frac{15}{17}\) và \(-\frac{19}{21}\)

Answer 1

Ta có:

\(1-\frac{15}{17}=\frac{2}{17}\)

\(1-\frac{19}{21}=\frac{2}{21}\)

Vì \(\frac{2}{17}>\frac{2}{21}\Rightarrow\frac{15}{17}< \frac{19}{21}\)

\(\Rightarrow-\frac{15}{17}>-\frac{19}{21}\)

Answer 2

hoc van trong trang nay nhung khong dang ki hoc ben ngoai co diem vao trong trang nay khong

Answer 3

Ta có : 

\(1-\frac{15}{17}=\frac{2}{17}\)

\(1-\frac{19}{21}=\frac{2}{21}\)

Do \(\frac{2}{17}>\frac{2}{21}=>-\frac{15}{17}>\frac{-19}{21}\)

Ủng hộ nha