9(x-1)-3x=3(12+x)

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Solution for 9(x-1)-3x=3(12+x) equation: 



9(x-1)-3x=3(12+x)

We move all terms to the left:

9(x-1)-3x-(3(12+x))=0

We add all the numbers together, and all the variables

9(x-1)-3x-(3(x+12))=0

We add all the numbers together, and all the variables

-3x+9(x-1)-(3(x+12))=0

We multiply parentheses

-3x+9x-(3(x+12))-9=0



We calculate terms in parentheses: -(3(x+12)), so:

3(x+12)

We multiply parentheses

3x+36

Back to the equation:

-(3x+36)



We add all the numbers together, and all the variables

6x-(3x+36)-9=0

We get rid of parentheses

6x-3x-36-9=0

We add all the numbers together, and all the variables

3x-45=0

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

3x=45

x=45/3

x=15

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