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= 4/6 + 1/3 - 3/4
= 8/12 + 4/12 - 9/12
= 12/12 - 9/12
= 3/12
=1/4
Respuesta: B. 3/12
---- - (- ----- + ------)
6 3 4
4 - 4 + 9
---- - ( -----------)
6 12
4 5
---- - ( - ---------)
6 12
4 5 8 + 5 13
---- + ------- = ------------- = -------- la respuesta es la c)
6 12 12 12