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 :

                     4*r-3-(3*(3*r+4))=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (4r - 3) -  3 • (3r + 4)  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   -5r - 15  =   -5 • (r + 3) 

Equation at the end of step  3  :

  -5 • (r + 3)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    -5   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    r+3 = 0 

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

One solution was found :