7(x+3)=(3x+9)

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Solution for 7(x+3)=(3x+9) equation: 



7(x+3)=(3x+9)

We move all terms to the left:

7(x+3)-((3x+9))=0

We multiply parentheses

7x-((3x+9))+21=0



We calculate terms in parentheses: -((3x+9)), so:

(3x+9)

We get rid of parentheses

3x+9

Back to the equation:

-(3x+9)



We get rid of parentheses

7x-3x-9+21=0

We add all the numbers together, and all the variables

4x+12=0

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

4x=-12

x=-12/4

x=-3

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