3.75-[(-3/8)+(-1/2)-(-5/6)+4又2/3]-0.125要步骤

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3.75-[(-3/8)+(-1/2)-(-5/6)+4又2/3]-0.125
=3.625-[-(3/8+1/2)+5/6+14/3]
=3.625-(11/2-7/8)
=3.625-37/8
=3.625-4.625
=-1