Answer: To solve the problem, we can use algebra. Let x be the number that is subtracted from 8. Then, we can write the equation:
(8 - x) / 5 = 1
To solve for x, we can first multiply both sides by 5:
8 - x = 5
Next, we can isolate x by subtracting 8 from both sides:
x = 3
Therefore, the number that is subtracted from 8 is 3.