math
posted by
John
.
__X+3___ is an integer, than X must be?
2

math 
Ms. Sue
Is your problem?
(x/2) + 3

math 
John
Ms Sue, the question is :
If x + 3 divided by 2 is an integer, then x must be what

math 
Ms. Sue
Hmm  let's try a few numbers 
2 + 3 = 5
5/2 = 2.5
3 + 3 = 6
6/2 = 3
4 + 3 = 7
7/2 = 3.5
5 + 3 = 8
8/2 = 4
What do you think?