13z=9z-12

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Solution for 13z=9z-12 equation: 



13z=9z-12

We move all terms to the left:

13z-(9z-12)=0

We get rid of parentheses

13z-9z+12=0

We add all the numbers together, and all the variables

4z+12=0

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

4z=-12

z=-12/4

z=-3

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