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 
Answer: C
Step-by-step explanation:
Use Desmos | Graphing Calculator <33 This app/website works wonders fro math
Hey,just to let you know that they is no picture as I can’t answer it.
X+4=-4
3x-8=-8
Hope it helps.