Question

n/2-2n/16=3/8

Answer 1

try making all the terms with a common denominator.
So:
(8n/16) - (2n/16) = (6/16)
now that you have a common denominator, you can add (or subtract) like terms:
(8n/16) - (2n/16) ====>>> 8-2 = 6
Therefore (6n/16) = 6/16
Multiply by reciprocal on both sides and reduce. You see the 16's and 6'2 cancel out: (16/6)(6n/16) = (6/16)(16/6)
therefore n = 1
Make sense?

Answer 2

6's*