What is the answer, what are the steps to solve this, and what do the parts of the equation represent?

Step-by-step explanation:

will form a sequence as,

499, 498, 497.......7 terms

Since there is a common difference between successive and previous term,

d = 498 - 499 = -1

This sequence is an arithmetic sequence.

Sum of n terms of an arithmetic sequence is,

where a = first term of the sequence

n = number of term

d = common difference

For the given given sequence,

    =

    =

    = 3472

Therefore, sum of seven terms of the given sequence will be 3472.

idk lol

step-by-step explanation: