Payton drives 7 3/4 and Jessie drives 6 3/8 to find how much farther Payton drives subtract them 7 3/4 - 6 3/8 find the LCD or least common denominator in the fractions 3/4 = 6/8 so now you have 7 6/8 - 6 3/8 7-6 = 1 6/8 - 3/8 = 3/8 gives you 1 3/8 miles farther
