Solution - Linear equations with one unknown

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                     7*(x+11)-3*x-(21)=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (7 • (x + 11) -  3x) -  21  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   4x + 56  =   4 • (x + 14) 

Equation at the end of step  3  :

  4 • (x + 14)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    4   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    x+14 = 0 

 Subtract  14  from both sides of the equation : 
                      x = -14

One solution was found :