21-2(2x+1)=13x-2(13+x)

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Solution for 21-2(2x+1)=13x-2(13+x) equation: 



21-2(2x+1)=13x-2(13+x)

We move all terms to the left:

21-2(2x+1)-(13x-2(13+x))=0

We add all the numbers together, and all the variables

-2(2x+1)-(13x-2(x+13))+21=0

We multiply parentheses

-4x-(13x-2(x+13))-2+21=0



We calculate terms in parentheses: -(13x-2(x+13)), so:

13x-2(x+13)

We multiply parentheses

13x-2x-26

We add all the numbers together, and all the variables

11x-26

Back to the equation:

-(11x-26)



We add all the numbers together, and all the variables

-4x-(11x-26)+19=0

We get rid of parentheses

-4x-11x+26+19=0

We add all the numbers together, and all the variables

-15x+45=0

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

-15x=-45

x=-45/-15

x=+3

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