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 :

                     5*(x+20)-(7*x+30)=0 

Step by step solution :

Step  1  :

Equation at the end of step  1  :

  5 • (x + 20) -  (7x + 30)  = 0 

Step  2  :

Step  3  :

Pulling out like terms :

 3.1     Pull out like factors :

   70 - 2x  =   -2 • (x - 35) 

Equation at the end of step  3  :

  -2 • (x - 35)  = 0 

Step  4  :

Equations which are never true :

 4.1      Solve :    -2   =  0

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

Solving a Single Variable Equation :

 4.2      Solve  :    x-35 = 0 

 Add  35  to both sides of the equation : 
                      x = 35

One solution was found :