To solve this, let's go by parts:
First, "6 subtracted from w", this means that we have W and subtract 6 from it. In Math form: W - 6
Then it says "is less than or equal to –22" This means, the expression we have ( W - 6) is less than or equal to -22. the sign for less than or equal to is: ≤
Then "less than or equal to -22" is writed: ≤ -22
Then we can write the whole expression:

And that's the sentence into an inequality.