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Mathematics 9 Online
OpenStudy (anonymous):

Solve the compound inequality 30 < 10u < 120. 3 < u < 4 3 > u > 12 3 > u > 4 3 < u < 12

OpenStudy (anonymous):

All you have to do is to get rid of the 10 from the u. You can do this by dividing everything from all three parts of the inequality by 10. What does that give you?

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