Answer:
18 7/12 miles
Explanation:
Luis is running a 26 mile marathon. He has completed 7 5/12 miles so far. How much farther does he have to run?
We solve the above question using the Subtraction operation
= 26 miles - 7 5/12 miles
= 26 miles - 89/12 miles
Lowest Common Denominator = 12
= 26/1 miles - 89/12 miles
= 312 - 89/12
= 223/12
= 18.583333333 miles
= 18 7/12 miles
He has 18 7/12 miles farther to go