21/2n-9=6

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Solution for 21/2n-9=6 equation: 



21/2n-9=6

We move all terms to the left:

21/2n-9-(6)=0



Domain of the equation: 2n!=0

n!=0/2

n!=0

n∈R



We add all the numbers together, and all the variables

21/2n-15=0

We multiply all the terms by the denominator


-15*2n+21=0

Wy multiply elements

-30n+21=0

We move all terms containing n to the left, all other terms to the right

-30n=-21

n=-21/-30

n=7/10

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