Respuesta :
Answer:
-5<n<4
Step-by-step explanation:
Subtract 9 from both sides
-6 < 3n + 9 -9 < 21-9
-6<3n<12
Divide all sides by 3
-5<n<4
Answer:
−5<n<4
Step-by-step explanation:
Subtract 9 from the whole equation.
−6−9<3n<21−9
Simplify.
−15<3n<12
Divide the whole equation by 3
[tex]-\frac{15}{3} < n < \frac{12}{3}[/tex]
Simplify
−5<n<4
