Question: A question about simplify

I'm making questions for new mathematical students, to know which is their level and then help them in his first year, but i have a problem; I want to know if they are able to simplify an operation, i.e. 4/6 i want them to write 4/6 with MapleTA i don't know how to do that, because a maple Graded question or a formula-enter question gives both valid, and i don't want to use string compare (because "2/3" is the same as "2 / 3" but it's not the same string..., if there is no other solution i can use maple to throw away the space character...") Anyway, there is somebody that knows a smart way to solve that problem? Thanks..
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