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 :

                     7^3*x-(21)=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (73 • x) -  21  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   343x - 21  =   7 • (49x - 3) 

Equation at the end of step  3  :

  7 • (49x - 3)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    7   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    49x-3 = 0 

 Add  3  to both sides of the equation : 
                      49x = 3
Divide both sides of the equation by 49:
                     x = 3/49 = 0.061

One solution was found :