In order to solve this exercise your need to remember the following:
- The word "less" indicates a subtraction.
- The "product" is the result of a multiplication.
- The word "equals" indicates that the symbol is "=".
Let be "n" the number mentioned in the exercise.
Knowing the above, you can determine that "the product of 3 and a number" can be written as:
You also know that "seven less than the product of 3 and a number" is:
Therefore, you can express "seven less than the product of 3 and a number equals 9" as following:
The answer is: