Solve equation 3x+3y+6z-15w=9

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

With alll of except for the 2 that i did already