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数学
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3/4x-1.2=3/5x
人气:309 ℃ 时间:2020-05-19 08:07:39
解答
3/4x-1.2=3/5x
0.75x-1.2=0.6x
0.75x-0.6x=1.2
0.15x=1.2
x=8
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