(7z-12)-7z=-12

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Solution for (7z-12)-7z=-12 equation: 



(7z-12)-7z=-12

We move all terms to the left:

(7z-12)-7z-(-12)=0

We add all the numbers together, and all the variables

-7z+(7z-12)+12=0

We get rid of parentheses

-7z+7z-12+12=0

We add all the numbers together, and all the variables

=0

z=0/1

z=0

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