Answer:
n = 11
Explanation:
Step 1: Write equation
2 = -9 + 22 - n
Step 2: Solve for n
- Combine like terms: 2 = 13 - n
- Subtract 13 to both sides: -11 = -n
- Divide both sides by -1: 11 = n
- Rewrite: n = 11
Step 3: Check
Plug in n to verify it's a solution.
- Substitute: 2 = -9 + 22 - 11
- Add: 2 = 13 - 11
- Subtract: 2 = 2