9+15z-7=9z+80-7z

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Solution for 9+15z-7=9z+80-7z equation: 



9+15z-7=9z+80-7z

We move all terms to the left:

9+15z-7-(9z+80-7z)=0

We add all the numbers together, and all the variables

15z-(2z+80)+9-7=0

We add all the numbers together, and all the variables

15z-(2z+80)+2=0

We get rid of parentheses

15z-2z-80+2=0

We add all the numbers together, and all the variables

13z-78=0

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

13z=78

z=78/13

z=6

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