-21/5-[0.75-(2又1/2-3/4-2)-4.2]
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解决时间 2021-01-06 01:17
- 提问者网友：杀手的诗
- 2021-01-05 07:02
-21/5-[0.75-(2又1/2-3/4-2)-4.2]
最佳答案
- 五星知识达人网友：动情书生
- 2021-01-05 08:16
-21/5-[0.75-(2又1/2-3/4-2)-4.2]
=-4.2-[0.75-(2.5-0.75-2)-4.2]
=-4.2-[0.75-2.5+0.75+2-4.2]
=-4.2-0.75+2.5-0.75-2+4.2
=-0.75-0.75+2.5-2
=-1.
=-4.2-[0.75-(2.5-0.75-2)-4.2]
=-4.2-[0.75-2.5+0.75+2-4.2]
=-4.2-0.75+2.5-0.75-2+4.2
=-0.75-0.75+2.5-2
=-1.
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