{2.74-0.56*(2又5/12-1又19/60+2.275)}/1又3/17
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![{2.74-0.56*(2又5/12-1又19/60+2.275)}/1又3/17](/uploads/image/z/105916-4-6.jpg?t=%7B2.74-0.56%2A%282%E5%8F%885%2F12-1%E5%8F%8819%2F60%2B2.275%29%7D%2F1%E5%8F%883%2F17)
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{2.74-0.56*(2又5/12-1又19/60+2.275)}/1又3/17
{2.74-0.56*(2又5/12-1又19/60+2.275)}/1又3/17
{2.74-0.56*(2又5/12-1又19/60+2.275)}/1又3/17
{2.74-0.56*(2又5/12-1又19/60+2.275)}*1又3/17
={2.74-0.56*(1.1+2.275)}*1又3/17
={2.74-0.56*3.375}*1又3/17
={2.74-1.89}*1又3/17
=0.85*20/17
=1
{2.74-0.56*(2又5/12-1又19/60+2.275)}*1又3/17
={2.74-0.56*(1.1+2.275)}*1又3/17
={2.74-0.56*3.375}*1又3/17
={2.74-1.89}*1又3/17
=0.85*20/17
=1
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