Solution - Linear equations with one unknown

Reformatting the input :

Changes made to your input should not affect the solution:

(1): Dot was discarded near "a.k".

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                     f*o*r*a*k-(4*a+9*a*b)=0 

Step by step solution :

Step  1  :

Pulling out like terms :

 1.1     Pull out like factors :

   forak - 4a - 9ab  =   a • (fork - 9b - 4) 

Equation at the end of step  1  :

Step  2  :

Theory - Roots of a product :

 2.1    A product of several terms equals zero. 

 When a product of two or more terms equals zero, then at least one of the terms must be zero. 

 We shall now solve each term = 0 separately 

 In other words, we are going to solve as many equations as there are terms in the product 

 Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

 2.2      Solve  :    a = 0 

  Solution is  a = 0

Solving a Single Variable Equation :

 2.3     Solve   fork-9b-4  = 0

In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.

We shall not handle this type of equations at this time.

One solution was found :