-1(x-3)=3(x-7)

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Solution for -1(x-3)=3(x-7) equation: 



-1(x-3)=3(x-7)

We move all terms to the left:

-1(x-3)-(3(x-7))=0



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

3(x-7)

We multiply parentheses

3x-21

Back to the equation:

-(3x-21)



We get rid of parentheses

-1(x-3)-3x+21=0

We add all the numbers together, and all the variables

-3x-1(x-3)+21=0

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

-3x-1(x-3)=-21

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