7=-12-x

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Solution for 7=-12-x equation: 



7=-12-x

We move all terms to the left:

7-(-12-x)=0

We add all the numbers together, and all the variables

-(-1x-12)+7=0

We get rid of parentheses

1x+12+7=0

We add all the numbers together, and all the variables

x+19=0

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

x=-19

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