Answer:
p= (-4)
Step-by-step explanation:
The answer is b
-1/2 p + -1 = -3 - p
-1/2 p -1 = -3 - p
+1 +1
_______________
-1/2 p = -2 -p
+p +p
______________
-p/2 =-2
x2 x
____________
p =-4
