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solve for x: −9 < 4x + 3 ≤ 27

 Oct 5, 2020
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−9 < 4x + 3 ≤ 27     subtract 3 from all sides

-12 < 4x <= 24         divide thru by 4

-3 < x <= 6              (-3,6]     

 Oct 5, 2020

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