Math: type the letter and give explanation

So here is the answer to the given question above. 
If we are to use substitution method in order to solve the following system, the new equation would be 4x – 3(8x + 9) = –22, the answer is the second option. 
Here is how I got the answer.
Let's take 8x - y = -22
So y = 8x + 22
Now, substitute the value of y to 4x – 3y = –22
and we get 4x - 3(8x +9) = -22.
Hope this answer helps.