5/3-8/3+1-5/3=？要过程

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5/3-8/3+1-5/3=5/3-5/3-8/3+3/3=-8/3+3/3=-5/3

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5/3-8/3+1-5/3
=-5/3

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-5/3­­­

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=-1+1-3/5=-3/5

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5/3-8/3+1-5/3
=-1+1-5/3
=0-5/3
=-5/3

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