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 :

                     9^2*x-(400)=0 

Step by step solution :

Step  1  :

 1.1     9 = 32

(9)² = (3²)² = 3⁴

Equation at the end of step  1  :

  (34 • x) -  400  = 0 

Step  2  :

Equation at the end of step  2  :

  81x - 400  = 0 

Step  3  :

Solving a Single Variable Equation :

 3.1      Solve  :    81x-400 = 0 

 Add  400  to both sides of the equation : 
                      81x = 400
Divide both sides of the equation by 81:
                     x = 400/81 = 4.938

One solution was found :