Question 203301
Let  x =  1st  odd integer,,(x+2) =  2nd,,,,(x+4) = 3rd
.
(x) +7*(x+4) =68
.
x + 7x +28 =68
.
8x =40
.
x=5,,,ist  integer,,,7=next,,,,,9=last
.
check, 5 +7*9 = 5 + 63 =68,,,ok