Question

Answer 1

Bài 1:

a: -1>-2

=>-1/3>-2/3

b: -8/21<0<-5/-7

c: -2/5=-8/20

-3/4=-15/20

=>-2/5>-3/4

d: -7/15<0<-8/-9

Answer 2

#\(N\)

`a, 2/-3 = -2/3 -> -1/3 > -2/3`

`b, -5/-7=5/7 (>0) -> -5/-7 > -8/21`

`c, 2/-5 =-2/5 -> 2/-5> -3/4`

`d. -8/-9 = 8/9 (>0) -> -7/15 < -8/-9`

`2,`

`a, -19/-2 = 19/2` |  `2=112/56 ; -5/7=-280/56 ; -11/8 = -77/56 ; 19/2 =532/56`

`-> -280/56 ;-77/56 ; 112/56 ; 532/56`

`-> -5/7 ; -11/8 ; 2 ; 19/2`

`b, -1 = -48/48 ; -9/8 = -54/48 ; 5/16 = 15/48 ; -8/-12 = 8/12 = 32/48 ; 3=144/48`

`-> 144/48 ; 32/48 ; 15/48 ; -48/48 ; -54/48`

`-> 3 ; -8/-12 ; 5/16 ; -1 ; -9/8`