(2×(19-x)÷2)*6=((3×15-2x)÷3)*6
(12*19-12x)*3=90-4x
接下来自己去算
2×(19-x)]÷2=(3×15-2x)÷3这个方程怎么样解,
2×(19-x)]÷2=(3×15-2x)÷3这个方程怎么样解,
数学人气：586 ℃时间：2019-10-23 02:41:34
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