It is (5 + 10)/2 = 15/2 = 7.5
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10
The halfway point between two numbers is found by calculating the average of the two numbers. In this case, the average of -20 and 10 is (-20 + 10) / 2 = -10 / 2 = -5. Therefore, the number halfway between -20 and 10 is -5.
4.5
8
The halfway number between 3/4 and 3/5 is 27/40.