Question

So sánh các phân số sau

\(\frac{5}{13}\)và \(\frac{-8}{-13}\)

Answer 1

Ta có -8/-13 = 8/13

Vì 5 < 8 suy ra 5/13 <  8/13

hay 5/13 < -8/-13

Vậy 5/13 < -8/-13

Answer 2

Ta có:\(\frac{-8}{-13}\)=\(\frac{8}{13}\)

Vì \(\frac{5}{13}\)<\(\frac{8}{13}\)=> \(\frac{5}{13}\)<\(\frac{-8}{-13}\)

Answer 3

Có: -8/-13=8/13

Vì 5<8 nên 5/13<8/13

=> 5/13<-8/-13

Answer 4

Ta có: \(\frac{-8}{-13}=\frac{8}{13}\)

Mà: 5 < 8

\(\Rightarrow\frac{5}{13}< \frac{8}{13}\)