Final answer:
The fraction with the least value among 5/7, 7/8, 11/15, and 7/10 is 11/15 after comparing their decimal equivalents or using a common denominator for comparison.
Step-by-step explanation:
The goal is to determine which of the given fractions has the least value as compare these fractions, we can look at their decimal equivalences or compare them by converting them to a common denominator. The fractions given are 5/7, 7/8, 11/15, and 7/10. When converted to decimal form or compared with a common denominator, it becomes clear that 11/15 has the least value among them.