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二计算 153.72除以63乘8.5 = = = 8.25-4.2乘1.25除以0.7
人气:484 ℃ 时间:2019-11-19 06:07:12
解答
你好,25257758zh
153.72÷63×8.5
=2.44×8.5
=20.74
8.25-4.2×1.25÷0.7
=8.25-6×1.25
=8.25-7.5
=0.75
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