Answer:
1 solution.
General Formulas and Concepts:
Pre-Algebra
Explanation:
Step 1: Define equation
9(z + 8) = -9z - 72
Step 2: Solve for x
- Distribute 9: 9x + 72 = -9z - 72
- Add 9z to both sides: 18z + 72 = -72
- Subtract 72 on both sides: 18z = -144
- Divide 18 on both sides: z = -8
Here we see that we will get only 1 solution for z.