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5/12÷8+1/8×7/12
=5/12x1/8+1/8×7/12
=(5/12+7/12)x1/8
=1x1/8
=1/8
=5/12x1/8+1/8×7/12
=(5/12+7/12)x1/8
=1x1/8
=1/8
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展开全部
5/12÷8+1/8×7/12
=5/12×1/8+1/8×7/12
=(5/12+7/12)×1/8
=1×1/8
=1/8
=5/12×1/8+1/8×7/12
=(5/12+7/12)×1/8
=1×1/8
=1/8
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