4+-(3x+21)=6

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Solution for 4+-(3x+21)=6 equation: 



4+-(3x+21)=6

We move all terms to the left:

4+-(3x+21)-(6)=0

determiningTheFunctionDomain
-(3x+21)+4-6+=0

We add all the numbers together, and all the variables

-(3x+21)=0

We get rid of parentheses

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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