What are the values in (y 5) is it (y+5) or (y-5) i cannot answer until given the full problem.
N+(n+2)+(n+4)=165
add everything together to get
3n+6=165
Subtract 6 from each side
3n=159
divide by 3
n=53
the numbers are 53,55,57
2.3+0.23 = 2.53
2.53+0.023 = 2.553