-3x=-(4x-7)

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Solution for -3x=-(4x-7) equation: 



-3x=-(4x-7)

We move all terms to the left:

-3x-(-(4x-7))=0



We calculate terms in parentheses: -(-(4x-7)), so:

-(4x-7)

We get rid of parentheses

-4x+7

Back to the equation:

-(-4x+7)



We get rid of parentheses

-3x+4x-7=0

We add all the numbers together, and all the variables

x-7=0

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

x=7

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