Add.

To add the expressions \((-7f - 2)\) and \((-8f + 1)\), we will combine the like terms.

1. Combine the \(f\) terms: \[ -7f - 8f = -15f \]

2. Combine the constant terms: \[ -2 + 1 = -1 \]

Putting it all together, we get: \[ (-7f - 2) + (-8f + 1) = -15f - 1 \]

So the final result is: \[ -15f - 1 \]