7z+z=7z+9

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Solution for 7z+z=7z+9 equation: 



7z+z=7z+9

We move all terms to the left:

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

We add all the numbers together, and all the variables

8z-(7z+9)=0

We get rid of parentheses

8z-7z-9=0

We add all the numbers together, and all the variables

z-9=0

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

z=9

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