7z+3z=180

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Solution for 7z+3z=180 equation: 



7z+3z=180

We move all terms to the left:

7z+3z-(180)=0

We add all the numbers together, and all the variables

10z-180=0

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

10z=180

z=180/10

z=18

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