15=2(x-1)-x

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Solution for 15=2(x-1)-x equation: 



15=2(x-1)-x

We move all terms to the left:

15-(2(x-1)-x)=0



We calculate terms in parentheses: -(2(x-1)-x), so:

2(x-1)-x

We add all the numbers together, and all the variables

-1x+2(x-1)

We multiply parentheses

-1x+2x-2

We add all the numbers together, and all the variables

x-2

Back to the equation:

-(x-2)



We get rid of parentheses

-x+2+15=0

We add all the numbers together, and all the variables

-1x+17=0

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

-x=-17

x=-17/-1

x=+17

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