I believe it would be the first option.
B) If y is the additive identity is 0
Answer:
g = 
Step-by-step explanation:
Given
2(g - h) = b + 4 ← distribute parenthesis on left side
2g - 2h = b + 4 ( add 2h to both sides )
2g = b + 4 + 2h ( divide both sides by 2 )
g = 
Answer:

Step-by-step explanation:

-8 -8
₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋

⇵

The answer is 64!
hope this helps youu!!