7z-7z+3z+2=20

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Solution for 7z-7z+3z+2=20 equation: 



7z-7z+3z+2=20

We move all terms to the left:

7z-7z+3z+2-(20)=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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