12=x+(x-3)

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



12=x+(x-3)

We move all terms to the left:

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



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

x+(x-3)

We get rid of parentheses

x+x-3

We add all the numbers together, and all the variables

2x-3

Back to the equation:

-(2x-3)



We get rid of parentheses

-2x+3+12=0

We add all the numbers together, and all the variables

-2x+15=0

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

-2x=-15

x=-15/-2

x=7+1/2

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