To solve this question, let's divide it in parts.
Part 01: "`Product of 7 and the number"
Let's say the unknown number is "a".
So, the product of 7 and "a" is 7a.
Part 02: The sum of -8 and the product of 7 and a number.
Since "the product of 7 and a number" is 7a:
The sum of -8 and 7a is
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Answer:
- 8 + 7a