Answer:
x=22/p
Step-by-step explanation:
1. Add 18 to 4
2. px=22
3. Divide by p to isolate x
4. 22/p=x
x = 22 ÷ p
px - 18 = 4
px - 18 + 18 = 4 + 18
px = 22
p · x = 22
x · p = 22
x · p ÷ p = 22 ÷ p
