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8-4.5x=3.5方程怎么解
人气:266 ℃ 时间:2020-01-25 12:00:30
解答
8 - 4.5x = 3.5
4.5x = 8 - 3.5
4.5x = 4.5
x = 4.5÷4.5
x = 1
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