21+7x=-(4x+3)

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Solution for 21+7x=-(4x+3) equation: 



21+7x=-(4x+3)

We move all terms to the left:

21+7x-(-(4x+3))=0



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

-(4x+3)

We get rid of parentheses

-4x-3

Back to the equation:

-(-4x-3)



We get rid of parentheses

7x+4x+3+21=0

We add all the numbers together, and all the variables

11x+24=0

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

11x=-24

x=-24/11

x=-2+2/11

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