Eight less than a number is no more than 14 and no less than 5

If you would like to transform the following phrase into a math expression, you can do it like this:

8 less than a number is no more than 14 and no less than 5

a number ... n

8 less ... - 8

no more than 14 ... < 14

no less than 5 ... > 5

Now you just have to put this together: 5 < n - 8 < 14

If 5 and 14 are included: 5 < = n - 8 < = 14