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 :

                     -4*(-x-2)-2*x+5-(31)=0 

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   -x - 2  =   -1 • (x + 2) 

Equation at the end of step  2  :

  (((0 -  -4 • (x + 2)) -  2x) +  5) -  31  = 0 

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   2x - 18  =   2 • (x - 9) 

Equation at the end of step  4  :

  2 • (x - 9)  = 0 

Step  5  :

Equations which are never true :

 5.1      Solve :    2   =  0

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

Solving a Single Variable Equation :

 5.2      Solve  :    x-9 = 0 

 Add  9  to both sides of the equation : 
                      x = 9

One solution was found :