Solution - Linear equations with one unknown

Step by step solution :

Step  1  :

Pulling out like terms :

 1.1     Pull out like factors :

   -105 - x  =   -1 • (x + 105) 

Equation at the end of step  1  :

Step  2  :

Solving a Single Variable Equation :

 2.1      Solve  :    -x-105 = 0 

 Add  105  to both sides of the equation : 
                      -x = 105
Multiply both sides of the equation by (-1) :  x = -105

One solution was found :