2z+z-3z+3z+3z+z=12

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Solution for 2z+z-3z+3z+3z+z=12 equation: 



2z+z-3z+3z+3z+z=12

We move all terms to the left:

2z+z-3z+3z+3z+z-(12)=0

We add all the numbers together, and all the variables

7z-12=0

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

7z=12

z=12/7

z=1+5/7

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