Question

Answer 1

`(a):(5)/(6)+(1)/(6)\le x \le(13)/(4)+(14)/(8)`

`=>(6)/(6)\le x \le (13.2+14)/(8)`

`=>1\le x \le 40/8`

`=>1\le x \le 5`

Mà : `x\in ZZ=>x\in {1;2;3;4;5}`

`(b):(-14)/(21)=(-14:7)/(21:7)=(-2)/(3)=(-2.2)/(3.2)=(-4)/(6)`

`(60)/(-72)=(-60:12)/(72:12)=(-5)/(6)`

Vì : `-4> -5=>(-4)/(6)> (-5)/(6)`

hay `(-14)/(21)> (60)/(-72)`

Answer 2

`a, 1 <= x <=5`

`-> x = 1, 2, 3, 4, 5`.

`b, -14/21=-2/3`

`60/-72 = -5/6`.

`-> -2/3 > -5/6`.