Answer: Carlos rode further than on Saturday by 107/56 miles.
Step-by-step explanation: We are given Carlos biked on Saturday = 139/8 miles.
He biked on Sunday = 135/7 miles.
Let us find which fraction is greater by finding common denominator.
LCM of 7 and 8 is 56.
Therefore, Common denominator of 139/8 and 135/7 is 56.
Converting each fraction as denominator 56.
139×7/8×7 = 973/56
135×8/7×8 = 1080/56.
We can see that 1080/56 is greater than 973/56.
On subtracting 973/56 from 1080/56, we get
1080/56 - 973/56 = 107/56