The denominators are not the same so we have to find equvalint fractions.
1/25/5=5/10 and 4/52/2=8/10
next add 5/10 and 8/10=1 3/10
Now add the two whole numbers-37+42=79
Fnally add the fraction and whole number together-79+1 3/10= 80 3/10 miles
ANSWER-80 3/10 MILES