Answer:
18
Step-by-step explanation:
subtract 12from both sides
p+12-12=30-12
p=30-12=18
30-12=p
p= 18
just make p the subject and you will get to ur answer.
6
-2x^2 - 2
(6x^2 + 3) - (5 + 8x^2)
-2x^2 + 3 - 5