Help >.<

(3/4)n + (1/3) [ (3/2)n + 1 ]  =    distribute the (1/3) over the terms in parenthses

(3/4)n  + (1/2)n + 1/3       combine like terms

(3/4 + 1/2)n  + 1/3

(5/4)n + 1/3