HELLLLLLLLLPPPPPPPP MEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!

Answer: C. Tobin should have divided by 3.
Step-by-step explanation:
TO cancel out the 3 of the 3x (because 3x is multiplying) Tobin would have needed to divide by 3 on each side to get the correct answer.
Answer:
C
Step-by-step explanation:
When isolating the x, one would divide by 3 rather than multiply by 3. I hope this helps :)