怎样简便怎样算 40%x5⼀6÷4⼀15 99%+91x(2⼀13-1⼀7

怎样简便怎样算40%x5/6÷4/15 99%+91x(2/13-1/7) 8x75%-3÷3/4 8.5x0.75+7.5x75%
2024-11-16 07:56:26
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