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Mathematics 20 Online
OpenStudy (anonymous):

solve -2/5x - 9 < 9/10

hero (hero):

-2/5x - 9 < 9/10 -2/5x < 9/10 + 9 -2/5x < 9/10 + 90/10 -2/5x < 99/10 -99/10 < 2/5x -99/10*5/2 < x -99/4 < x

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