7z-5+z+5+z=180

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Solution for 7z-5+z+5+z=180 equation: 



7z-5+z+5+z=180

We move all terms to the left:

7z-5+z+5+z-(180)=0

We add all the numbers together, and all the variables

9z-180=0

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

9z=180

z=180/9

z=20

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