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4/z=12/3
We move all terms to the left:
4/z-(12/3)=0
Domain of the equation: z!=0We add all the numbers together, and all the variables
z∈R
4/z-4=0
We multiply all the terms by the denominator
-4*z+4=0
We add all the numbers together, and all the variables
-4z+4=0
We move all terms containing z to the left, all other terms to the right
-4z=-4
z=-4/-4
z=1
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