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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

4z-20-(-40)=0

We add all the numbers together, and all the variables

4z+20=0

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

4z=-20

z=-20/4

z=-5

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