7=z-12

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Solution for 7=z-12 equation: 



7=z-12

We move all terms to the left:

7-(z-12)=0

We get rid of parentheses

-z+12+7=0

We add all the numbers together, and all the variables

-1z+19=0

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

-z=-19

z=-19/-1

z=+19

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