7z-z-5z-z+4z=16

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Solution for 7z-z-5z-z+4z=16 equation: 



7z-z-5z-z+4z=16

We move all terms to the left:

7z-z-5z-z+4z-(16)=0

We add all the numbers together, and all the variables

4z-16=0

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

4z=16

z=16/4

z=4

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