Solution - Linear equations with one unknown

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (7 • (2x + 2)) +  6 • (x + 2)  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   2x + 2  =   2 • (x + 1) 

Equation at the end of step  3  :

  14 • (x + 1) +  6 • (x + 2)  = 0 

Step  4  :

Step  5  :

Pulling out like terms :

 5.1     Pull out like factors :

   20x + 26  =   2 • (10x + 13) 

Equation at the end of step  5  :

  2 • (10x + 13)  = 0 

Step  6  :

Equations which are never true :

 6.1      Solve :    2   =  0

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

Solving a Single Variable Equation :

 6.2      Solve  :    10x+13 = 0 

 Subtract  13  from both sides of the equation : 
                      10x = -13
Divide both sides of the equation by 10:
                     x = -13/10 = -1.300

One solution was found :