-3z=8-7

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Solution for -3z=8-7 equation: 



-3z=8-7

We move all terms to the left:

-3z-(8-7)=0

We add all the numbers together, and all the variables

-3z-1=0

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

-3z=1

z=1/-3

z=-1/3

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