Respuesta :

The answer would be:
Convert 7 1/4 to 7 3/12,
then, 7-4 = 3,
3/12-11/12 = -8/12, then, 
3 - 8/12, which would equal 
2 4/12, which simplifies to 2 1/3.

Hope this helps and have a nice day:)