(x)(3x)=81^2

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Solution for (x)(3x)=81^2 equation: 



(x)(3x)=81^2

We move all terms to the left:

(x)(3x)-(81^2)=0

We add all the numbers together, and all the variables

x3x-6561=0

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

x3x=6561

x=6561/1

x=6561

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