If the rule is subtract 3/4, and the first number is 3 3/8, what are the first four numbers?
3 + 3/8 = 27/8
And 3/4 = 6/8
So...the first four numbers are :
27/8, 21/8, 15/8, 9/8
BTW .....The nth term is given by : [ 27/8 - (3/4)(n - 1) ] = [ 33/8 - (3/4)n ]