Question

Integers and their value?

Answer 1

`n in {-4,-3,-2,-1,0,1,2}.`

Explanation:

`-15 < 3n <= 6, n in ZZ.`

Dividing by `3 >0,` the inequality will not be altered.

`:. -5 < n <= 2, n in ZZ.`

`rArr n in {-4,-3,-2,-1,0,1,2}.`