1-(7/9-5/6+7/18)×18-1.125÷(-9/8)=1-(14/18-15/18+7/18)X18-9/8÷(-9/8)=1-3X18-1=-54[-2³-1-12÷(-1/2²)]÷[1+|-1-3²×2|]=[ -8-1-12÷1/4 ]÷[1+19]=[-57]÷20=-57/20|4/5+2/3×(-12)÷...
还有这题:1-(7/9-5/6+7/18)×18-1.125÷(-9/8)=?
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能简便得要简便:(4/7+8/9)×2/25 (5/6-5/9)×18/5 1÷(1-3/4×8/9÷5/6) 19/2