Final answer:
Eduardo doesn't have any rope left after finishing both the front and back.
Step-by-step explanation:
Eduardo has 4 1/2 yards of rope light. To find how many yards he has left after finishing both the front and the back, we need to subtract the length of the rope used from the total length.
If Eduardo finishes both the front and back, we can assume that he uses the same amount of rope for both. So, he uses 4 1/2 yards of rope for each side. We can find the total amount of rope used by multiplying the amount used for one side by 2:
4 1/2 yards x 2 = 9 yards
To find the amount of rope remaining, we subtract the total amount used from the original length:
4 1/2 yards - 9 yards = -4 1/2 yards
Since we can't have a negative length, Eduardo doesn't have any rope left after finishing both the front and back.