this is the last one i promise.. but I do need help so..thx please help if you can and hurry due soon!

Answer:
[tex]4(20 - 16y)[/tex]
Each side measures 20 -16y units
Step-by-step explanation:
A square has 4 sides so divide, 80 - 64y by 4.
80 ÷ 4 = 20
-64y ÷ 4 = -16y
Therefore, each side measures 20 - 16y