.x-(4x-7)=5x-(x+21)

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Solution for .x-(4x-7)=5x-(x+21) equation: 



.x-(4x-7)=5x-(x+21)

We move all terms to the left:

.x-(4x-7)-(5x-(x+21))=0

We add all the numbers together, and all the variables

-(4x-7)-(5x-(x+21))=0

We get rid of parentheses

-4x-(5x-(x+21))+7=0



We calculate terms in parentheses: -(5x-(x+21)), so:

5x-(x+21)

We get rid of parentheses

5x-x-21

We add all the numbers together, and all the variables

4x-21

Back to the equation:

-(4x-21)



We get rid of parentheses

-4x-4x+21+7=0

We add all the numbers together, and all the variables

-8x+28=0

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

-8x=-28

x=-28/-8

x=3+1/2

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