12-8z=20-4z

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Solution for 12-8z=20-4z equation: 



12-8z=20-4z

We move all terms to the left:

12-8z-(20-4z)=0

We add all the numbers together, and all the variables

-8z-(-4z+20)+12=0

We get rid of parentheses

-8z+4z-20+12=0

We add all the numbers together, and all the variables

-4z-8=0

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

-4z=8

z=8/-4

z=-2

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