An express elevator starts on the 5th floor and descends 8 floors. Which equation shows the correct computations for finding the elevator’s stop?

The elevator starts at floor 5, so its starting position is represented by 5. Descending 8 floors means adding –8: 5 + (–8) = –3. The correct equation is “5 + –8 = –3,” choice B; the negative result means the elevator stops three floors below the starting reference level.

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