Solution - Linear equations with one unknown

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   3z - 6  =   3 • (z - 2) 

Equation at the end of step  2  :

  9 • (z - 2)  = 0 

Step  3  :

Equations which are never true :

 3.1      Solve :    9   =  0

This equation has no solution.
A a non-zero constant never equals zero.

Solving a Single Variable Equation :

 3.2      Solve  :    z-2 = 0 

 Add  2  to both sides of the equation : 
                      z = 2

One solution was found :