15+8z=z+78

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Solution for 15+8z=z+78 equation: 



15+8z=z+78

We move all terms to the left:

15+8z-(z+78)=0

We get rid of parentheses

8z-z-78+15=0

We add all the numbers together, and all the variables

7z-63=0

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

7z=63

z=63/7

z=9

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