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24乘以12.5减12.5除以0.25
人气:419 ℃ 时间:2019-10-29 22:36:20
解答
24乘以12.5-12.5除以0.25
=24乘以12.5-12.5乘以4
=(24-4)乘以12.5
=20乘以12.5
=250
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