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 :

                     2^2*b-(40)=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (22 • b) -  40  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   4b - 40  =   4 • (b - 10) 

Equation at the end of step  3  :

  4 • (b - 10)  = 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  :    b-10 = 0 

 Add  10  to both sides of the equation : 
                      b = 10

One solution was found :