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 :

                     30-(x/100)=0 

Step by step solution :

Step  1  :

             x 
 Simplify   ———
            100

Equation at the end of step  1  :

         x 
  30 -  ———  = 0 
        100

Step  2  :

Rewriting the whole as an Equivalent Fraction :

 2.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  100  as the denominator :

           30     30 • 100
     30 =  ——  =  ————————
           1        100   

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

 2.2       Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

 30 • 100 - (x)     3000 - x
 ——————————————  =  ————————
      100             100   

Equation at the end of step  2  :

  3000 - x
  ————————  = 0 
    100   

Step  3  :

When a fraction equals zero :

 3.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

  3000-x
  —————— • 100 = 0 • 100
   100  

Now, on the left hand side, the  100  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :
   3000-x  = 0

Solving a Single Variable Equation :

 3.2      Solve  :    -x+3000 = 0 

 Subtract  3000  from both sides of the equation : 
                      -x = -3000
Multiply both sides of the equation by (-1) :  x = 3000

One solution was found :