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 :

                     7*(3*r-1)-(r+5)-(-52)=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (7 • (3r - 1) -  (r + 5)) -  -52  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   20r + 40  =   20 • (r + 2) 

Equation at the end of step  3  :

  20 • (r + 2)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    20   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    r+2 = 0 

 Subtract  2  from both sides of the equation : 
                      r = -2

One solution was found :