15=3(x-1)-(x-9)

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Solution for 15=3(x-1)-(x-9) equation: 



15=3(x-1)-(x-9)

We move all terms to the left:

15-(3(x-1)-(x-9))=0



We calculate terms in parentheses: -(3(x-1)-(x-9)), so:

3(x-1)-(x-9)

We multiply parentheses

3x-(x-9)-3

We get rid of parentheses

3x-x+9-3

We add all the numbers together, and all the variables

2x+6

Back to the equation:

-(2x+6)



We get rid of parentheses

-2x-6+15=0

We add all the numbers together, and all the variables

-2x+9=0

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

-2x=-9

x=-9/-2

x=4+1/2

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