-21-3x=3(1+3x)

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Solution for -21-3x=3(1+3x) equation: 



-21-3x=3(1+3x)

We move all terms to the left:

-21-3x-(3(1+3x))=0

We add all the numbers together, and all the variables

-3x-(3(3x+1))-21=0



We calculate terms in parentheses: -(3(3x+1)), so:

3(3x+1)

We multiply parentheses

9x+3

Back to the equation:

-(9x+3)



We get rid of parentheses

-3x-9x-3-21=0

We add all the numbers together, and all the variables

-12x-24=0

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

-12x=24

x=24/-12

x=-2

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