Answer:
16/21 km
Explanation:
The LCD here is 42. Thus, 8 3/7 km = 8 18/42 and 7 4/6 km = 7 28/42 km.
The difference in the two distances is
8 18/42 km
- 7 28/42 km
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or:
7 60/42 km Here I have borrowed 42/42 from that 8.
- 7 28/42 km
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32/42 km, or 16/21 km