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Find all real numbers a such that 2a + 7 > -a + 5.  Give your answer as an interval.

 Nov 12, 2019
 #1
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2a + 7  >  - a + 5       add a to both sides, subtract 7 from both sides

 

3a ≥ - 2         divide both sides by  3

 

a ≥ -2/3

 

[ -2/3 , infinity )

 

cool cool cool

 Nov 12, 2019

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