Respuesta :

12*n-(54)≤0 
Step by step solution :
Step 1:
Pulling out like terms :
 1.1     Pull out like factors :
   12n - 54  =   6 • (2n - 9) 
Equation at the end of step  1  :
Step  2:
 2.1    Divide both sides by  6 

 2.2    Divide both sides by  2  

      n-(9/2)  ≤ 0

Solve Basic Inequality :
 2.3      Add  9/2  to both sides

             n ≤ 9/2