7/10-2/7-5/7 (2/3-0.4)÷(1/6+0.5) 1/4×0.8+1/2÷3/4-
7/10-2/7-5/7(2/3-0.4)÷(1/6+0.5)1/4×0.8+1/2÷3/4-0.80.25÷(1-5/9)+3/8...
7/10-2/7-5/7
(2/3-0.4)÷(1/6+0.5)
1/4×0.8+1/2÷3/4-0.8
0.25÷(1-5/9)+3/8 展开
(2/3-0.4)÷(1/6+0.5)
1/4×0.8+1/2÷3/4-0.8
0.25÷(1-5/9)+3/8 展开
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