9z+7z=3z-4-z

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Solution for 9z+7z=3z-4-z equation: 



9z+7z=3z-4-z

We move all terms to the left:

9z+7z-(3z-4-z)=0

We add all the numbers together, and all the variables

9z+7z-(2z-4)=0

We add all the numbers together, and all the variables

16z-(2z-4)=0

We get rid of parentheses

16z-2z+4=0

We add all the numbers together, and all the variables

14z+4=0

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

14z=-4

z=-4/14

z=-2/7

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