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展开全部
25x45x4
=25x4x45
=100x45
=4500
20x67x5
=20x5x67
=100x67
=6700
46x4x2
=(50-4)x2x4
=50x2x4-4x2x4
=100x4-8x4
=400-32
=368
125x4x8
=125x8x4
=1000x4
=4000
=25x4x45
=100x45
=4500
20x67x5
=20x5x67
=100x67
=6700
46x4x2
=(50-4)x2x4
=50x2x4-4x2x4
=100x4-8x4
=400-32
=368
125x4x8
=125x8x4
=1000x4
=4000
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展开全部
25x4)X2125X4x45x46x5X8X4x20x67
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