(3x+7)^2-9=7

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Solution for (3x+7)^2-9=7 equation: 



(3x+7)^2-9=7

We move all terms to the left:

(3x+7)^2-9-(7)=0

We add all the numbers together, and all the variables

(3x+7)^2-16=0

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

(3x+7)^2=16

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