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-6.2z=27.9
We move all terms to the left:
-6.2z-(27.9)=0
We add all the numbers together, and all the variables
-6.2z-27.9=0
We move all terms containing z to the left, all other terms to the right
-6.2z=27.9
z=27.9/-6.2
z=-4+1/2
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