-8+z-20=12-4z

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



-8+z-20=12-4z

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

z-(-4z+12)-28=0

We get rid of parentheses

z+4z-12-28=0

We add all the numbers together, and all the variables

5z-40=0

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

5z=40

z=40/5

z=8

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