Answer:
625
Step-by-step explanation:
All it is saying to do is to do -5x-5x-5x-5
X/7= -3
X= -21
Hope this helps!
If you have questions, feel free to ask
Answer: x=-17
Step-by-step explanation: Divide by -1 then add 8 to both sides and get (x+9)^3=-512, and the cube root of -512 is -8, so x+9=-8, and subtracting 9 from both sides we get x=-17 as answer.