It’s the third one.. I think
Answer:

Step-by-step explanation:

![\textsf{x=1/2[(4x+5)-50]}](https://tex.z-dn.net/?f=%5Ctextsf%7Bx%3D1%2F2%5B%284x%2B5%29-50%5D%7D)







Answer:
6,528 divided by 8 is 816
6528/8 = 816
6348 divide by 9 is 705.44..... ♾️
Answer:
Step-by-step explanation:
Since the squares have areas of 32u^2. The side lengths are

450/30
15
15/3x =5
x= 5
5+2y= 315
5-5+2y =315-5
2y = 310
2y/2 = 310/2
y=155
Step-by-step explanation:
450/45
10
2x+4y=450
2×5=10
10+(4×155)
=620/155
=4
10/5=2