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1.4×0.16+1.4×0.09+1.4×0.75=1.4×□
人气:423 ℃ 时间:2020-03-24 22:20:43
解答
1.4×0.16+1.4×0.09+1.4×0.75
=1.4×(0.16+0.09+0.75)
=1.4×1.
故答案为:1.
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