6x+21=-3(x+2)

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Solution for 6x+21=-3(x+2) equation: 



6x+21=-3(x+2)

We move all terms to the left:

6x+21-(-3(x+2))=0



We calculate terms in parentheses: -(-3(x+2)), so:

-3(x+2)

We multiply parentheses

-3x-6

Back to the equation:

-(-3x-6)



We get rid of parentheses

6x+3x+6+21=0

We add all the numbers together, and all the variables

9x+27=0

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

9x=-27

x=-27/9

x=-3

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