63÷[2.02-(2-1.05)x80%]
=63÷(2.02-0.95x80%)
=63÷(2.02-0.0.76)
=63÷12.6
=5
不懂可追问,有帮助请采纳,谢谢!
63÷[2.02-(2-1.05)x80%]简便计算
63÷[2.02-(2-1.05)x80%]简便计算
数学人气：853 ℃时间：2020-02-05 14:30:38
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