作业帮30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]
来源：学生作业帮助网 编辑：作业帮 时间：2024/10/06 20:46:57
![30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]](/uploads/image/z/1973307-3-7.jpg?t=30%E5%8F%888%2F25-%5B%2820-9.744%2F2%E5%8F%882%2F5%29%2A1%2F2-1%E5%8F%8863%2F100%5D)
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30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]
30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]
30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]
30又8/25-[(20-9.744/2又2/5)*1/2-1又63/100]
=30+8/25-[(20-4.06)×(1/2)-1-63/100]
=30+8/25-(10-2.03-1-0.63)
=30+8/25-9+2.66
=21+0.32+2.66
=21+2.98
=23.98
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