Solve: ax-b=c and 3x-b=a (these are two seperate questions)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?

What is the value of x? enter your answer in the box.