Question

y1=5x+6, y2=x+9, y3=x, and the difference between 9 times y1, and 44 times y2 is 342 less that y3

Answer 1

So, 9(y1) - 44(y2) = y3 - 342

After some substitution, you should have a little algebra to do.

I am worried about the signs of things. It y2 < y1 in the solution set? Is y3 - 342 > 0 in the solution set? You WILL have to check anything you think is an answer. There remain mysteries, here!

You may need:

So, 44(y2) - 9(y1) = y3 - 342

Do some exploring!