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18/x-4=1+20/x+4
We move all terms to the left:
18/x-4-(1+20/x+4)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: x+4)!=0We add all the numbers together, and all the variables
x∈R
18/x-(20/x+5)-4=0
We get rid of parentheses
18/x-20/x-5-4=0
We multiply all the terms by the denominator
-5*x-4*x+18-20=0
We add all the numbers together, and all the variables
-9x-2=0
We move all terms containing x to the left, all other terms to the right
-9x=2
x=2/-9
x=-2/9
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