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分数除法计算题3= 2= 3= 6= 2= 4= 7= 2= 4= 2= 3= 8= 5= 6= 10= 12= 2= 15= 11= 3= 5= 4= 4= 9= 8=5= 4= 1= 4= 5= 3= 7= 36= 6= = 7= 8= 4= = = = = = 24= 分数混合运算1- () 11 01 () 0.32 62.410(1) (0.4)(0.5) () (5) (0.75)0.4 0.80.8 0.25(1) 解下列方程x- x -4= 21 2X + = X X= X=20 X-X=400 X = 5X3 X12 X12 X( + )= X= X= 4X6=2 X= X+X=42 X21=4 XX= 4X6=2 X-X= X X= XX121 x + x = 4 X=1