(x+3)=12-x

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



(x+3)=12-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

x+1x+3-12=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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