Solve 16 = 8 + x. A. x = 2 B. x = 24 C. x = 8 D. x = 128

Pulling out like terms : 3.1     Pull out like factors :

   24 - 8x  =   -8 • (x - 3) 
Equation at the end of step  3  : -8 • (x - 3) = 0 Step  4  :Equations which are never true : 4.1      Solve :    -8   =  0

This equation has no solution.
A a non-zero constant never equals zero.Solving a Single Variable Equation : 4.2      Solve  :    x-3 = 0 

 Add  3  to both sides of the equation : 
                      x = 3 
One solution was found :                   x = 2