2.25-( -1又3/4+3又1/4)-(1.75-8.73+5又3/4)
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![2.25-( -1又3/4+3又1/4)-(1.75-8.73+5又3/4)](/uploads/image/z/3014921-65-1.jpg?t=2.25-%28+-1%E5%8F%883%2F4%2B3%E5%8F%881%2F4%29-%281.75-8.73%2B5%E5%8F%883%2F4%29)
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2.25-( -1又3/4+3又1/4)-(1.75-8.73+5又3/4)
2.25-( -1又3/4+3又1/4)-(1.75-8.73+5又3/4)
2.25-( -1又3/4+3又1/4)-(1.75-8.73+5又3/4)
=2.25-1.5+1.23
=1.98