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数学
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(X一8)÷3二X一22求X等于多少
人气:388 ℃ 时间:2020-04-16 08:00:40
解答
两边同时乘以3
X-8=3X-66
X-8+66=3X-66+66
X+58=3X
X+58-X=3X-X
58=2X
解得,X=29
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