Answer:
-4<n<3
Explanation:
Since -7 is with the n and you are only trying to see how n compares itself, divide all three parts by -7.
-21 divided by -7 = 3
-7n divided by -7 = n
28 divided by -7 = -4
YOU MAY THINK THIS IS THE END, BUT REMEMBER THAT IF THE INEQUALITY IS DIVIDED OR MULTIPLIED BY A NEGATIVE NUMBER THE SIGN IS SWITCHED.
-4<n<3