Answer: 3x+120
Step-by-step explanation:
(3x−1)=3x−1
=3x−1+90+31
Add the numbers: −1+90+31=120= 3x+120
I couldnt solve x because the problem isnt complete so i simplfied the equasion. Hope this helps :). I would really apreciate brainliest if not that alright.
Have a great day!
