Answer :
Let the number of miles Bill ran be X
Given that Jacob ran 7 miles less than Bill.
Since Jacob ran 18 miles, the miles Jacob ran will be represented by the equation below:
X - 7 = 18
Now let's solve for x:
First add 7 to both sides of the equation:
[tex]X\text{ - 7 + 7 = 18 + 7}[/tex][tex]X\text{ = 25 miles}[/tex]Therefore, Bill ran a total of 25 miles