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-4/5z=1
We move all terms to the left:
-4/5z-(1)=0
Domain of the equation: 5z!=0We multiply all the terms by the denominator
z!=0/5
z!=0
z∈R
-1*5z-4=0
Wy multiply elements
-5z-4=0
We move all terms containing z to the left, all other terms to the right
-5z=4
z=4/-5
z=-4/5
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