-16 -8/2 +25÷5+1

To calculate this expression, we follow the order of operations (PEMDAS/BODMAS).

First, we perform the division: 25 ÷ 5 = 5.

Then, we simplify the subtraction: -8/2 = -4.

Finally, we add all the components: -16 + (-4) + 5 + 1 = -20 + 5 + 1 = -15.