X=8 because add 11 to both sides and it becomes 28=3.5x and divide both sides by 3.5 so x=8
First You would divide both numbers by ten to get 15 and 25. Then you realize that both numbers are divisible by 5 so you divide both sides you then end up with 3 to 5 which is your answer.
For the first picture it’s the last one, for the second picture it’s y=x-2
With what????????
I could probably help depends on what it is