(4/5+2/3-1/15)x45

分类: 作业答案 • 2022-01-09 18:02:03

问题描述：

(4/5+2/3-1/15)x45

答

(4/5+2/3-1/15)x45
=4/5x45+2/3x45-1/15x45
=36+30-3
=63
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