Question

3/ Không quy đồng mẫu số, hãy so sánh :

a/ \(\dfrac{31}{32}\) và \(\dfrac{-5}{57}\)          ;          b/ \(\dfrac{-15}{81}\) và \(\dfrac{7}{90}\)

Answer 1

a: 31/32>0>-5/57

b: -15/81<0<7/90

Answer 2

3/

a/ \(\dfrac{31}{32}>0>\dfrac{-5}{57}\)

b/ \(\dfrac{-15}{81}< 0< \dfrac{7}{90}\)

Answer 3

\(\dfrac{31}{32}>0>\dfrac{-5}{57}\)