Final answer:
The first term of the Arithmetic Progression (AP) with a given 8th term and common difference can be found using the formula a = 8th term - (n - 1) x d. In this case, the first term is 4.
Step-by-step explanation:
The first term of an Arithmetic Progression (AP) can be found using the formula:
a = 8th term - (n - 1) x d
Where a is the first term, n is the position of the term, and d is the common difference.
Given that the 8th term is 39 and the common difference is 5, we can substitute these values into the formula:
a = 39 - (8 - 1) x 5
Simplifying the expression:
a = 39 - 7 x 5
a = 39 - 35
a = 4
Therefore, the first term of the AP is 4.