Poor kid, next time ask your parents or teacher for help or try to find a smart friend that can help you. Go to bed if it is late and make sure you understand your homework before taking it home. Good luck!! :))
13-12
Or
18-7
I hope this helped or this is what you meant :) if not let me know
What question I don’t see no question
X + 8 < 14 |subtract 8 from both sides
x < 6 ⇒ x ∈ (-∞; 6)
You would minus 12 on both sides which would give you d= -16.8 meters it’s a negative answer btw
Hope this helps