9z-7=7+7z

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



9z-7=7+7z

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

9z-7z-7-7=0

We add all the numbers together, and all the variables

2z-14=0

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

2z=14

z=14/2

z=7

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