来自潘岚的问题
【﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣22/25﹚]=﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣25/22﹚]打错了】
﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣22/25﹚]=
﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣25/22﹚]
打错了
1回答
2020-02-16 15:46
【﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣22/25﹚]=﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣25/22﹚]打错了】
﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣22/25﹚]=
﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣25/22﹚]
打错了
﹣3-[﹣5+(1-0.2×3/4﹚×﹙﹣25/22﹚]
=﹣3-[﹣5+17/20x(﹣25/22﹚]
=﹣3-[﹣5+(﹣85/88﹚]
=﹣3-(﹣5又85/88﹚
=﹣3+5又85/88
=2又85/88