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x.1/4x=81
We move all terms to the left:
x.1/4x-(81)=0
Domain of the equation: 4x!=0We multiply all the terms by the denominator
x!=0/4
x!=0
x∈R
x.1-81*4x=0
Wy multiply elements
x.1-324x=0
We add all the numbers together, and all the variables
-324x+x.1=0
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