(x-3)/3=(x+7)/7

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Solution for (x-3)/3=(x+7)/7 equation: 



(x-3)/3=(x+7)/7

We move all terms to the left:

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

We calculate fractions


x/()+(-((x+7)*3)/()=0



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

-((x+7)*3)/(

We multiply all the terms by the denominator


-((x+7)*3)



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

(x+7)*3

We multiply parentheses

3x+21

Back to the equation:

-(3x+21)



We get rid of parentheses

-3x-21

Back to the equation:

+(-3x-21)



We get rid of parentheses

x/()-3x-21=0

We multiply all the terms by the denominator


x-3x*()-21*()=0

We add all the numbers together, and all the variables

x-3x*()=0

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