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 :

                -12*(x-12)-(-9*(1+7*x))=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (0-(12•(x-12)))-(0-9•(7x+1))  = 0 

Step  2  :

Equation at the end of step  2  :

  (0 -  12 • (x - 12)) -  -9 • (7x + 1)  = 0 

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   51x + 153  =   51 • (x + 3) 

Equation at the end of step  4  :

  51 • (x + 3)  = 0 

Step  5  :

Equations which are never true :

 5.1      Solve :    51   =  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 

 Subtract  3  from both sides of the equation : 
                      x = -3

One solution was found :