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 :

                     40^2*x-(20)=0 

Step by step solution :

Step  1  :

 1.1     40 = 23•5

(40)² = (2³•5)² = 2⁶ • 5²

Equation at the end of step  1  :

  ((26•52) • x) -  20  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   1600x - 20  =   20 • (80x - 1) 

Equation at the end of step  3  :

  20 • (80x - 1)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    20   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    80x-1 = 0 

 Add  1  to both sides of the equation : 
                      80x = 1
Divide both sides of the equation by 80:
                     x = 1/80 = 0.013

One solution was found :