Question 125707
One number is x, so the "another" number has to be x - 12.


Twice the larger number is 2x.  The sum of the smaller number (x - 12) and twice the larger number (2x) is (meaning equals) 36.


So, {{{2x+(x-12)=36}}}


{{{3x-12=36}}}


{{{3x=48}}}


{{{x=16}}}.  The larger number is 16.


Check:  The smaller number has to be 4, 2 times 16 is 32 plus 4 is 36.  Answer checks.


Choose x to be the smaller number and work it out.  See if you get the same result.  (If you don't, keep trying)