30.8÷【14-(9.85+1.07)】
=30.8÷(14-10.92)
=30.8÷3.08
=10
30.8÷【14-(9.85+1.07)】怎样简便运算
30.8÷【14-(9.85+1.07)】怎样简便运算
数学人气:345 ℃时间:2020-05-25 04:39:03
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