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 :

                     21-(4+9*n)=0 

Step by step solution :

Step  1  :

Solving a Single Variable Equation :

 1.1      Solve  :    -9n+17 = 0 

 Subtract  17  from both sides of the equation : 
                      -9n = -17
Multiply both sides of the equation by (-1) :  9n = 17


Divide both sides of the equation by 9:
                     n = 17/9 = 1.889

One solution was found :