-4z=20-2z

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Solution for -4z=20-2z equation: 



-4z=20-2z

We move all terms to the left:

-4z-(20-2z)=0

We add all the numbers together, and all the variables

-4z-(-2z+20)=0

We get rid of parentheses

-4z+2z-20=0

We add all the numbers together, and all the variables

-2z-20=0

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

-2z=20

z=20/-2

z=-10

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