7=3+x-12

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Solution for 7=3+x-12 equation: 



7=3+x-12

We move all terms to the left:

7-(3+x-12)=0

We add all the numbers together, and all the variables

-(x-9)+7=0

We get rid of parentheses

-x+9+7=0

We add all the numbers together, and all the variables

-1x+16=0

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

-x=-16

x=-16/-1

x=+16

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