The product of 3 and the difference of a number and 1.
To find the product of 3 and the difference of a number and 1, you can follow these steps:
1. Let's assume the number as 'x'.
2. Take the difference of the number and 1, which means subtract 1 from the number. This can be expressed as (x - 1).
3. Multiply this difference by 3. The product of 3 and (x - 1) can be expressed as 3 * (x - 1).
So, the expression for the product of 3 and the difference of a number and 1 is 3 * (x - 1).