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4/7÷【1/3×(3/5%3/10)】怎么脱式计算

37.5%×5/7+1/7×3/8+3/8÷7 =3/8×5/7+1/7×3/8+3/8×1/7 =3/8×(5/7+1/7+1/7) =3/8×1 =3/8

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