Answer:
Step 2
Step-by-step explanation:
Mario made a mistake in Step 2 when substracting from . When substracting his result ended up being but it is actually....
so the right answer is
x + 12 = -5
Subtract 12 from both sides
x + 12 - 12 = -5 - 12
Simplify
x = -17
Answer
D. x = -17