Answer:
He is 7 decades old.
Step-by-step explanation:
The neighbor is 7 decades old
30 in
-17 =x
144 = -12 (x + 5)
Divide each side by -12
144/-12 = -12 (x + 5)/-12
-12 = x+5
Subtract 5 from each side
-12-5 =x+5-5
1. 5x -2
2. 5x + 2
3. -5x -2
4. -5x + 2
