7/13×3/4×13/8的算法急

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7/13×3/4×13/8的算法急7/13×3/4×13/8的算法急7/13×3/4×13/8的算法急7/13×3/4×13/8=(7/13×13/8)×3/4=7/8×3/4=21/32=(7X3)

7/13×3/4×13/8的算法急
7/13×3/4×13/8的算法
急

7/13×3/4×13/8的算法急
7/13×3/4×13/8
=(7/13×13/8)×3/4
=7/8×3/4
=21/32

=(7X3)/(4x8)
=21/32