First simplify 
4y+-12=-4
Reorder the terms: 
-12+4y=-4
Move all terms containing "y" to the left, all other terms to the right.
Add 12 to each side of the equation:
 -12 + 12 + 4y = -4 + 12 
Combine like terms:
 -12 + 12 = 0 
0 + 4y = -4 + 12 
4y = -4 + 12
Combine like terms: 
-4 + 12 = 8 
4y = 8
Divide each side by '4'.
 y = 2
So your answer is B Y=2 
hope this helped