The sum of a number and fourteen is less than or equal to three times the number

I assume we are writing the equation. The sum of a number and 14 is less than or equal to three times the number.

Let's put in a few values.
The sum of a number = x and + 14 is less than < or equal to = three times 3 * the number.

Now we have: x + 14 is < or = 3 * the number.

We can just remove the "is" and "or", because this is normal math patterns.

x + 14 <= 3 * the number. 

"The Number" is referring to the "a number" at the very beginning. So we can replace that with the same variable.

x + 14 <= 3x

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