Answer:
-8
Step-by-step explanation:
In the expression (-8)(10-5-8), the -8 is right next to the (10-5-8), so the -8 would multiply the rest of the expression.
Some examples: 2(3) = 2 × 3
6(2 + 4) = 6 × (2 + 4)
6(1 - 2(3)) = 6 × (1 - 2 × 3)
(-7)(9 - 4 - 7) = (-7) × (9 - 4 - 7)