3x+9-7x=3(x+6)

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Solution for 3x+9-7x=3(x+6) equation: 



3x+9-7x=3(x+6)

We move all terms to the left:

3x+9-7x-(3(x+6))=0

We add all the numbers together, and all the variables

-4x-(3(x+6))+9=0



We calculate terms in parentheses: -(3(x+6)), so:

3(x+6)

We multiply parentheses

3x+18

Back to the equation:

-(3x+18)



We get rid of parentheses

-4x-3x-18+9=0

We add all the numbers together, and all the variables

-7x-9=0

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

-7x=9

x=9/-7

x=-1+2/7

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