(x=3)(x-7)=0

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Solution for (x=3)(x-7)=0 equation: 



(x=3)(x-7)=0

We move all terms to the left:

(x-(3)(x-7))=0



We calculate terms in parentheses: +(x-3(x-7)), so:

x-3(x-7)

We multiply parentheses

x-3x+21

We add all the numbers together, and all the variables

-2x+21

Back to the equation:

+(-2x+21)



We get rid of parentheses

-2x+21=0

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

-2x=-21

x=-21/-2

x=10+1/2

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