To find the three terms that come before $-7$ in a sequence, we need to understand the pattern or rule governing the sequence. Without knowing this, there are multiple possibilities. For example:

1. Arithmetic Sequence:

If the sequence is arithmetic (where the difference between consecutive terms is constant), the difference $d$ must be determined. For instance, if the sequence decreases by a constant number:

• Suppose the difference is $-2$:
  The terms before $-7$ are: $-5, -3, -1$

• Suppose the difference is $-3$:
  The terms before $-7$ are: $-4, -1, 2$

2. Geometric Sequence:

If the sequence is geometric (where each term is multiplied by a constant factor), the common ratio $r$ must be determined. For instance, if the common ratio is $2$:

• The terms before $-7$ could be: $-3.5, -1.75, -0.875$

Please provide more information about the sequence's rule or pattern, and I can give the exact terms.

Do you want more details or have any questions?
Here are some related questions:

1. How do you find the common difference in an arithmetic sequence?
2. How do you determine the common ratio in a geometric sequence?
3. Can sequences contain both negative and positive terms?
4. What is the formula for the $n$-th term of an arithmetic sequence?
5. How can you identify the type of sequence given only a few terms?

Tip: Always check for a pattern in a sequence, whether it's arithmetic (add/subtract) or geometric (multiply/divide).