Hi,
the smallest of three consecutives integers
,
, 
is added to twice the largest, the result so obtained is 15 less than four timess the middle integer.
Question states***
x + 2(x+2) = 4(x+1) - 15
3x + 4 = 4x + 4 - 15
15 = x
The three consecutives integers are 15, 16, 17
and