12.9+z=3.8

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Solution for 12.9+z=3.8 equation: 



12.9+z=3.8

We move all terms to the left:

12.9+z-(3.8)=0

We add all the numbers together, and all the variables

z+9.1=0

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

z=-9.1

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