Question

[Tào Nguyễn Viết Nhân]

-20<x<21

-18<x<17

-27<x<27

|x|<3

|x|<5

Answer 1

[Bông hoa]

-20<x<21

=>x={-19,-18,.....,21}

-18<x<17

=>x={-17,-16,....,17}

-27<x<27

=>x={-26,-25,....,26}

|x|<3

=>x={-2,-1,1,2}

|x|<5

=>x={-4,-3,-2,-1,1,2,3,4}