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 :

                10*d-(-10*d-8*(-2*d-9))=0 

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   -2d - 9  =   -1 • (2d + 9) 

Equation at the end of step  2  :

  10d -  (-10d -  -8 • (2d + 9))  = 0 

Step  3  :

Step  4  :

Pulling out like terms :

 4.1     Pull out like factors :

   4d - 72  =   4 • (d - 18) 

Equation at the end of step  4  :

  4 • (d - 18)  = 0 

Step  5  :

Equations which are never true :

 5.1      Solve :    4   =  0

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

Solving a Single Variable Equation :

 5.2      Solve  :    d-18 = 0 

 Add  18  to both sides of the equation : 
                      d = 18

One solution was found :