Question

3 less than the difference between 15 and a number u

Answer 1

Equation: 15 - u - 3

Explanation:

The key words here are "less than" and "difference". Let's start with the second part of the sentence.

3 less than the difference between 15 and a number u

This means the subtraction between 15 and a number u.

Now, let's focus on the first part.

3 less than the difference between 15 and a number u

This also means subtraction because it is taking away from 15 - u, so that the equation has less.

So, we end up with 15 - u - 3