The rectangle below has a perimeter of 64 units. How long are the sides?

Answer:
x=14
18 by 14
Step-by-step explanation:
64=18+x+x+2x-10
64=8+4x
56=4x
x=14
side 1 = 14
2(14)-10
28-10
18
side 2 = 18 (just to check if x is right)