1/5 = n/30
n=?
i need to find out what the numerator is.

N Simplify —— 30

Equation at the end of step  1  :

1 n — - —— = 0 5 30

Step  2  :

1 Simplify — 5

Equation at the end of step  2  :

1 n — - —— = 0 5 30

Step  3  :

Calculating the Least Common Multiple :

 3.1    Find the Least Common Multiple 

      The left denominator is :       5 

      The right denominator is :       30 

L. Mult. • L. Num. 6 —————————————————— = —— L.C.M 30 R. Mult. • R. Num. n —————————————————— = —— L.C.M 30

Adding fractions that have a common denominator :

 3.4       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:

6 - (n) 6 - n ——————— = ————— 30 30

Equation at the end of step  3  :

6 - n ————— = 0 30

Step  4  :

When a fraction equals zero :

 4.1    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:

6-n ——— • 30 = 0 • 30 30

Now, on the left hand side, the  30  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :
   6-n  = 0

Solving a Single Variable Equation :

 4.2      Solve  :    -n+6 = 0 

 Subtract  6  from both sides of the equation : 
                      -n = -6 
Multiply both sides of the equation by (-1) :  n = 6 

One solution was found :

                   n = 6

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