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z-70/4=4
We move all terms to the left:
z-70/4-(4)=0
determiningTheFunctionDomain z-4-70/4=0
We multiply all the terms by the denominator
z*4-70-4*4=0
We add all the numbers together, and all the variables
z*4-86=0
Wy multiply elements
4z-86=0
We move all terms containing z to the left, all other terms to the right
4z=86
z=86/4
z=21+1/2
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