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59-4X7脱式计算

59.10-2.87-7.13 60.0.96+9.6*9.9 61.7....脱式计算30.8÷[14-(9.85+1.07)] [60-(9.5...8-4x=6 6x-7=12 7x-9=8 x-56=1 8-7x=1...

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