Answer:
I don't if this is right but is the 629
Step-by-step explanation:

Move the "x" terms to the right


Divide both sides by 5:

1/2, 2/4, 3/6, 4/8, 5/10, 6/12, 7/14, 8/16, 9/18, 10/20, 11/22, 12/24, 13/26, 14/28, 15/30, 16/32, 17/34, 18/36, 19/38, 20/40
0.405, 0.45 , 0.5 , 4.5 : Least to greatest!
Sophia = (6/6 + 5/6) 5 = 9.16666…
9.1666… is equal to 9 laps