Answer:
The answer to your problem is:
m +14.3 =43.6
m =29.3
Explanation:
Miles to travel: 43.6
Miles left to travel: 14.3
To find the amount of miles that the train has already traveled (m), we know that the sum of that value (m) and the miles left to travel (14.3) is equal to the total miles (43.6)
m +14.3 = 43.6
m = 43.6-14.3= 29.9
Thus the answer to your problem is,
m +14.3 =43.6
m =29.3