Can someone check this for me please? Thank you!

Step-by-step explanation:
You've got the concept correct, but be careful with your parentheses. You should write it 3/(2n). Otherwise it looks like three halves n.
Answer:
Yes.
Step-by-step explanation:
Yes, but I would write the equation as 3/ (2n) so that it is not understood as
'3/2 times n'.