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最佳答案:1.59÷80.45=0.0165.79÷3.38=19.4687.28×36.43=3180.1086.78÷89.71=0.9663.20÷1.54=40.
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最佳答案:3/4*1/9+1/4*1/9 2.5/8*2/7+5/8*5/7 3.101*1/5-1/5*21 4.31*5*6-5/6 5.8*4/5+8*11/5 6