2+7z=4z+20

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Solution for 2+7z=4z+20 equation: 



2+7z=4z+20

We move all terms to the left:

2+7z-(4z+20)=0

We get rid of parentheses

7z-4z-20+2=0

We add all the numbers together, and all the variables

3z-18=0

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

3z=18

z=18/3

z=6

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