0.68×9.4-6.8×0.24+68×3%
=0.68×9.4-0.68×2.4+0.68×3
=0.68×(9.2-2.4+3)
=0.68×10
=6.8
0.68*9.4-6.8*0.24+68*3%怎么简便计算
0.68*9.4-6.8*0.24+68*3%怎么简便计算
数学人气：950 ℃时间：2019-12-26 06:47:50
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