12z-21=-12+12z

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Solution for 12z-21=-12+12z equation: 



12z-21=-12+12z

We move all terms to the left:

12z-21-(-12+12z)=0

We add all the numbers together, and all the variables

12z-(12z-12)-21=0

We get rid of parentheses

12z-12z+12-21=0

We add all the numbers together, and all the variables

-9!=0

There is no solution for this equation

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