1/19X+50-1/10X=32
1/19X-1/10X=-18
(10X-19X)/190=-18
9/190X=18
X=380
1/19X+1/10(500-x)=32 方程怎么解
1/19X+1/10(500-x)=32 方程怎么解
数学人气：192 ℃时间：2019-12-25 21:40:08
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