12-x=2(x-4)-1

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Solution for 12-x=2(x-4)-1 equation: 



12-x=2(x-4)-1

We move all terms to the left:

12-x-(2(x-4)-1)=0

We add all the numbers together, and all the variables

-1x-(2(x-4)-1)+12=0



We calculate terms in parentheses: -(2(x-4)-1), so:

2(x-4)-1

We multiply parentheses

2x-8-1

We add all the numbers together, and all the variables

2x-9

Back to the equation:

-(2x-9)



We get rid of parentheses

-1x-2x+9+12=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

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