Question

Solve.
-6<3n+9<21
Thanks!

Answer 1

−6<3n+9<21

−6+−9<3n+9+−9<21+−9(Add -9 to all parts)

−15<3n<12

−15

3

<

3n

3

<

12

3

(Divide all parts by 3)

−5<n<4

Explanation:

Answer 2

the answer you are looking for is -5<n<4