2z+7z=1

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Solution for 2z+7z=1 equation: 



2z+7z=1

We move all terms to the left:

2z+7z-(1)=0

We add all the numbers together, and all the variables

9z-1=0

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

9z=1

z=1/9

z=1/9

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