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3/2÷2/3, las fracciones, cuando se dividen, se multiplican con el recíproco, resultando 9/4.
(-(6/4)+(9/4))= 3/4.
(5/3)×(3/4)-(-4/9)
=(15/12)+(4/9)
=(5/4)+(4/9)
=(61/36)