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 :

                3*(-2*x+4)-4*x-2-(-20)=0 

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   -2x + 4  =   -2 • (x - 2) 

Equation at the end of step  2  :

  ((-6 • (x - 2) -  4x) -  2) -  -20  = 0 

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   30 - 10x  =   -10 • (x - 3) 

Equation at the end of step  4  :

  -10 • (x - 3)  = 0 

Step  5  :

Equations which are never true :

 5.1      Solve :    -10   =  0

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

Solving a Single Variable Equation :

 5.2      Solve  :    x-3 = 0 

 Add  3  to both sides of the equation : 
                      x = 3

One solution was found :