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

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



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

We move all terms to the left:

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



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

7x-(x+7)

We get rid of parentheses

7x-x-7

We add all the numbers together, and all the variables

6x-7

Back to the equation:

-(6x-7)



We get rid of parentheses

3x-6x+7+4=0

We add all the numbers together, and all the variables

-3x+11=0

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

-3x=-11

x=-11/-3

x=3+2/3

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