What is the difference in simplest form n^+3n+2/n^2+5n+6 - 2n/n+3

a) 1-n/n+3
b) 1/n+3
c) n+1/n+3
d) n-1/n+3

Pls what is the decimal equivalent of 5 over 9? select one: a. 0 point 5 bar over top of 5 b. 0 point 6 bar over top of 6 c. 0 point 8 bar over top of 8 d. 0 point 9 bar over top of 9