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*(-2*k+4)-6-(7*k-20)=0 

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   -2k + 4  =   -2 • (k - 2) 

Equation at the end of step  2  :

  (-14 • (k - 2) -  6) -  (7k - 20)  = 0 

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   42 - 21k  =   -21 • (k - 2) 

Equation at the end of step  4  :

  -21 • (k - 2)  = 0 

Step  5  :

Equations which are never true :

 5.1      Solve :    -21   =  0

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

Solving a Single Variable Equation :

 5.2      Solve  :    k-2 = 0 

 Add  2  to both sides of the equation : 
                      k = 2

One solution was found :