Question 405673
The 1st integer is {{{x}}}
The numbers go odd, even, odd, even, etc.
so, the next odd number is {{{x + 2}}}
and thr next odd integer is {{{x + 4}}}
The sum  is {{{x + x + 2 + x + 4 = 3x + 6}}} answer
to check: suppose {{{x = 7}}}
{{{x + 2 = 9}}}
{{{x + 4 = 11}}}
{{{7 + 9 + 11 = 27}}}
and
{{{3x + 6 = 3*7 + 6}}}
{{{21 + 6 = 27}}}
OK