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-2/5x-9<9/10

 Nov 3, 2016
 #1
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I'll assume this is :

 

(-2/5 ) x - 9 < 9/10       multiply through by 10 to clear the fractions

 

-4x - 90 < 9       add 90 to both sides

 

-4x < 99        divide both sides by -4 and reverse the inequality sign

 

x > -99/4

 

 

 

cool cool cool       

 Nov 3, 2016

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