2m-100mm-2cm+0.2m-0.1m等于多少

来源：学生作业帮编辑：拍题作业网作业帮分类：物理作业时间：2024/06/16 04:11:51

2m-100mm-2cm+0.2m-0.1m
=2m -0.1m -0.02m +0.2m -0.1m
=1.98m
=198cm
再问： {5x+4y=7 {7x+3y=15 怎么算

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