Respuesta :

I am not sure what the question is but maybe the answer is ...

2.5 < d

Hope I helped :-)
If D represents a number, than the equation is "D-2.5" because it is 2.5 less, so it would be subtraction. If it is an inequality, then it would be 2.5 on the left and d on the right: 2.5 < D
~Silver