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