I don’t quite understand to in my own words: to help us know what we don’t know
6 < 3b
Divide both sides by 3,
6/3 < 3b/3
2 < b
3b + 12 < 9
Substitute 12 from both sides,
3b < -3
Divide both sides by 3,
b < -1
So, option D is your answer.
Hope this helps!
