Answer:
10
Step-by-step explanation:
I think that it is 10 because it would have to be a rectangle or square to find the perimeter. So first I divided 120 by 4 and then got 30. Then I divided 30 by 3 and got 10. So, this is why I think it is 10.
120/4 = 30
30/3 = 10
For the one including 4w the answer is - 7
The one with n/2 is - 12
4w=-13-15
4w=-28
w=-7
Multiply by 2 on both sides
-24=n-12
-24+12=n
Always write it in the variables perspective.
n=-12
