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- The seventh grade second volume mathematics inequality courseware.
The seventh grade second volume mathematics inequality courseware.
1, from the title: 2x+4 & gt；; Ax- 1, that is, (2-a) x > -5。 Because the title says X.
2. I didn't understand the topic.
3 、( 2a-b)x & lt； 4b-3a, because x & gt4/9, so 2A-B.
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