4x+9=21x2x

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Solution for 4x+9=21x2x equation: 



4x+9=21x^2x

We move all terms to the left:

4x+9-(21x^2x)=0

determiningTheFunctionDomain
-21x^2x+4x+9=0

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

-21x^2x+4x=-9

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