-7+9z-12z=6+z

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Solution for -7+9z-12z=6+z equation: 



-7+9z-12z=6+z

We move all terms to the left:

-7+9z-12z-(6+z)=0

We add all the numbers together, and all the variables

9z-12z-(z+6)-7=0

We add all the numbers together, and all the variables

-3z-(z+6)-7=0

We get rid of parentheses

-3z-z-6-7=0

We add all the numbers together, and all the variables

-4z-13=0

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

-4z=13

z=13/-4

z=-3+1/4

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