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3x+(100-x)/3=100
人气:142 ℃ 时间:2020-02-05 07:32:14
解答
3x + (100 - x)/ 3 = 100
9x + 100 - x = 300
9x - x = 300 - 100
8x = 200
x = 200÷8
x = 25
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