3+9n=21n=

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Solution for 3+9n=21n= equation: 



3+9n=21n=

We move all terms to the left:

3+9n-(21n)=0

We add all the numbers together, and all the variables

-12n+3=0

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

-12n=-3

n=-3/-12

n=1/4

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