Answer:
Step-by-step explanation:
18 < x
15 < x - 3
Add three too both sides to get ride of the three on the right
15 + 3 < x - 3 + 3
Simplify
P=(-4/5,34/5)
P=2/5{(-8+6),(-2+19)}
P=2/5{-2,17}
P={-4/5,34/5}