rational numbers only

[Jorge Barros de Abreu]

Hi.

?????Which the variable name that force maxima to work with ratonal numbers 
only???
For example, when in octave is inserted:

1+0.5+1/3+5/3

the answer is:

ans = 3.5000

but i will like that the answer was:

ans = 7/2

the desired answer is 7/2, not 3.5.

Is it possible ou alread implemented??

Thanks

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