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0.3z-13-4z+6.7z=1
We move all terms to the left:
0.3z-13-4z+6.7z-(1)=0
We add all the numbers together, and all the variables
3z-14=0
We move all terms containing z to the left, all other terms to the right
3z=14
z=14/3
z=4+2/3
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