P(x)=3x+7

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Solution for P(x)=3x+7 equation: 



(P)=3P+7

We move all terms to the left:

(P)-(3P+7)=0

We get rid of parentheses

P-3P-7=0

We add all the numbers together, and all the variables

-2P-7=0

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

-2P=7

P=7/-2

P=-3+1/2

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