Sure, let's solve the problem step-by-step.
### Problem:
We want to find the expression for "7 less than fifteen times a number."
### Step-by-Step Solution:
1. Identify the unknown number:
Let the unknown number be represented by [tex]\( x \)[/tex].
2. Expression for fifteen times a number:
Fifteen times the unknown number can be written as [tex]\( 15x \)[/tex].
3. Expression for 7 less than fifteen times a number:
Since you want to find a value that is 7 less than a given expression, you subtract 7 from it. Therefore, the expression is:
[tex]\[
15x - 7
\][/tex]
### Final Answer:
The expression for "7 less than fifteen times a number" is:
[tex]\[
15x - 7
\][/tex]
This expression represents any number [tex]\( x \)[/tex] multiplied by 15 and then decreased by 7.