Answer:
The width of the spacing between  each board is  inches.
 inches.
Step-by-step explanation:
Given: Each board  .
.
Let's convert the mixed number  to improper fraction.
 to improper fraction.

Total width of 15 boards =  inches
 inches
Now we have to find the total space between the boards.
The total space = 144 - 
The total space = 
There 14 equal spaces between each board.
To find the width of spacing between each board, we need to divide  by 14.
 by 14.
The width of spacing between each board = 
Now we can convert the mixed number to improper and multiply with the reciprocal of 14.
The reciprocal of 14 is 
= 
Therefore, the width of the spacing between  each board is  inches.
 inches.