Solution - Linear equations with one unknown

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  (4 • (-3p - 15)) -  4 • (5 - p)  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   -3p - 15  =   -3 • (p + 5) 

Equation at the end of step  3  :

  -12 • (p + 5) -  4 • (5 - p)  = 0 

Step  4  :

Step  5  :

Pulling out like terms :

 5.1     Pull out like factors :

   -8p - 80  =   -8 • (p + 10) 

Equation at the end of step  5  :

  -8 • (p + 10)  = 0 

Step  6  :

Equations which are never true :

 6.1      Solve :    -8   =  0

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

Solving a Single Variable Equation :

 6.2      Solve  :    p+10 = 0 

 Subtract  10  from both sides of the equation : 
                      p = -10

One solution was found :