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 :

                     -90-(-6*a-12-6*a-12)=0 

Step by step solution :

Step  1  :

Pulling out like terms :

 1.1     Pull out like factors :

   -66 + 12a  =   6 • (2a - 11) 

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

 2.1      Solve :    6   =  0

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

Solving a Single Variable Equation :

 2.2      Solve  :    2a-11 = 0 

 Add  11  to both sides of the equation : 
                      2a = 11
Divide both sides of the equation by 2:
                     a = 11/2 = 5.500

One solution was found :