7x=4(x-3)-x

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



7x=4(x-3)-x

We move all terms to the left:

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



We calculate terms in parentheses: -(4(x-3)-x), so:

4(x-3)-x

We add all the numbers together, and all the variables

-1x+4(x-3)

We multiply parentheses

-1x+4x-12

We add all the numbers together, and all the variables

3x-12

Back to the equation:

-(3x-12)



We get rid of parentheses

7x-3x+12=0

We add all the numbers together, and all the variables

4x+12=0

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

4x=-12

x=-12/4

x=-3

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