Which term of the sequence has a value of -123?

You can not copy and paste here.

if you mean the sequence in your previous problem

a = -5

-123 = 17 - 5n
n = 28 or 28 terms before our first term which was 17

To find the term of a sequence that has a value of -123, we need to know the sequence and its pattern. Please provide me with the sequence or describe the pattern so I can help you determine which term has the value of -123.