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数学
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3X=4-5X 4X-2=6X-10
人气:175 ℃ 时间:2020-06-04 15:56:41
解答
3X=4-5X
5x+3x=4
8x=4
x=1/2
4X-2=6X-10
6x-4x=10-2
2x=8
x=4
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