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-3分之1+4分之3-6分之5+2分之1 =-4/12+9/12-10/12+6/12 =9/12+6/12-4/12-10/12 =15/12-4/12-10/12 =11/12-10/12 =1/12補充:等於:12分之1,以上是過程的!請點擊右下角採納,追問:謝了回答:不用謝的,客氣了!請點擊右下角採納吧,
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