Answer
$22$ feet
Work Step by Step
The first side of the wall has a storage of $7$ feet plus $5$ equal lengths for plants. Make x equal to the length of each plant. The equation of the length would be: $7 +5x$
The second side has a storage of $4$ feet plus $6$ equal lengths for the plants. The equation of the length would be: $4 +6x$
Set both equations equal.
$7 + 5x = 4 +6x$
Subtract $5x$ from each side.
$7 = 4+6x-5x$
$7 = 4+x$
Subtract $4$ from both sides to get :
$3 = x$
If $x = 3$, we can plug this in to find the storage length. Lets plug it into equation 1: $(7 +5x)$
$7 + (5\times3) = 22$ feet
