x-(x+21)=8(x-4)+3x

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Solution for x-(x+21)=8(x-4)+3x equation: 



x-(x+21)=8(x-4)+3x

We move all terms to the left:

x-(x+21)-(8(x-4)+3x)=0

We get rid of parentheses

x-x-(8(x-4)+3x)-21=0



We calculate terms in parentheses: -(8(x-4)+3x), so:

8(x-4)+3x

We add all the numbers together, and all the variables

3x+8(x-4)

We multiply parentheses

3x+8x-32

We add all the numbers together, and all the variables

11x-32

Back to the equation:

-(11x-32)



We add all the numbers together, and all the variables

-(11x-32)-21=0

We get rid of parentheses

-11x+32-21=0

We add all the numbers together, and all the variables

-11x+11=0

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

-11x=-11

x=-11/-11

x=1

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