Respuesta :

To solve for this we need x by itself. To do that we divide both sides by 5.
This will leave you with x <_9.
 
Pull out like factors :

   5x - 45  =   5 • (x - 9) 
 Divide both sides by  5 


Add  9  to both sides

 x ≤ 9




Your answer is
x ≤ 9

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