9/3=21x

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Solution for 9/3=21x equation: 



9/3=21x

We move all terms to the left:

9/3-(21x)=0

We add all the numbers together, and all the variables

-21x+3=0

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

-21x=-3

x=-3/-21

x=1/7

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